12. 2(x+4)=8 14. 4w-2(1-w)=-38 16. 10(1-2y)=-5(2y-1 ?

Question

I'm having some trouble in Alg.2 and can't figure these out. =[

Answer 1

You just multiply and solve for x or w or y

12. 2(x+4)=8  distribute the 2

2x+8 = 8  subtract 8 from both sides

2x = 0  divide by 2, but at this point, you should see that

x = 0

4w-2(1-w)=-38  Multiply

4w -2+2w = -38  combine like terms and add 2 to both sides

6w = -36 divide both sides by 6

w = -6

16. 10(1-2y)=-5(2y-1)   distribute the 10 and 5

10-20y = -10y +5  subtract 5 and add 20y to both sides

5=10y  divide both sides by 10

5/10 = y = 1/2

Answer 2

12. x=0

14. w=-20/3

16. y=1/2

i got an A+ in algebra 2 last year

Answer 3

12. 0 14. 9 16. 1/2

Answer 4

To make it a little easier for you to understand, I put the work on the left, and explained the step on the right.

#12.  2(x+4) = 8  

2 X x = 2x                                   Multiply 2 and x

2 X 4 = 8                                     Multiply 2 and 4

2x + 8 = 8  

2x -8 = 8 -8                                 Subtract 8 from both sides

2x = 0    

2x/2 = 0/2                                    Divide both sides by two

Answer:  x = 0

#14.  4w - 2(1-w) = -38      

-2 X 1 = -2  Multiply -2 and 1

-2 X -w = 2w                          Multiply -2 and -w

4w -2 +2w = -38                          

6w -2 = -38                                  Add the 4w and 2w

6w -2 +2 = -38 +2                       Add 2 to both sides

6w = -36

6w/6 = -36/6                                Divide both sides by 6

Answer:   w = -6



#16.  10(1-2y) = -5(2y - 1)          

10 X 1 = 10                                  Multiply 10 and 1

10 X -2y = -20y                            Multiply 10 and -2y

10 - 20y

10 - 20y = -5(2y -1)    

-5 X 2y = -10y                             Multiply -5 and 2y

-5 X -1  = 5                                  Multiply -5 and -1  

-10y + 5

10 - 20y = -10y + 5  

10 -20y +20y = -10y +5 +20y   Add 20y to both sides

10 = 10y +5

10 -5 = 10y +5 -5                      Subtract 5 from both sides

5 = 10y  

5/10 = 10y/10                            Divide both sides by 10

Answer:   1/2 = y

I like how my idea to describe what I was doing in each step somehow made mpsmom feel threatened enough that they might not get best answer, because they copied my idea into their own edited post a couple hours later. It's almost flattering.

Answer 5

2(x + 4) = 8

2x +8= 8

2x=0

x=0

4w - 2(1 - w) = -38

4w - 2 +2w = -38

4w + 2w = -36

6w = -36

w = -6

10(1-2y)=-5(2y-1)

10 - 20y = 10y -5

15 = 30y

y = .5

that was easy

can i please have best answer? that took some time

Answer 6

12. 2(x+4)=8

2x + 8 = 8

2x = 0

x = 0

14. 4w-2(1-w)=-38

4w - 2 + 2w = -38

6w = -38 + 2

6w = -36

w = -6

16. 10(1-2y)=-5(2y-1)

10 - 20y = -10y + 5

10 - 5 = -10y + 20y

10y = 5

y = 5/10 = 1/2

Answer 7

12

x=0

14

w=-6

16

y= 1/2 or 0.5

Answer 8

Question 12:

2(x+4) = 8

2x+8 = 8

2x = 8-8

2x=0

x = 0

Question 14:

4w-2(1-w) = -38

4w - [2-2w] = -38

4w - 2 + 2w = -38

6w - 2 = - 38

6w = - 38 + 2

6w = - 36

w = -6

Question 16:

10(1-2y) = -5(2y-1)

10 - 20y = -10y + 5

10 - 5 = -10y + 20y

5 = 10y

1/2 = y

Answer 9

the answer is 66

Answer 10

school just started.  you're going to have to eventually learn this on your own.  these are very simple too...  always remember PEMDAS

2(x+4) = 8

2x + 8 = 8

     -8      -8

2x = 0

x = 0

now do the rest on your own.