Homework help needed on algebra problem!?

Question

okay, last question i promise. when solving an equation what would u do if you had 6(1+4v)-(-11-v)=42. What do you do about the - sign in the middle of the two?

Answer 1

distribute it.. like so

6+24v+11+v=42

17+25v=42

25v=42-17

25v=25

v=1

Answer 2

What you do with a - in the middle is to subtract, just like always.

6(1 + 4v) - (-11 - v) = 42

6 + 24v + 11 + v = 42

25v = 42-17 = 25

v = 1

- - -

-2(-7k+4)+9=-13

+14k - 8 + 9 = -13

14k = -13 + 8 - 9 = -14

k = -1

Answer 3

6(1+4v) - (-11-v) = 42

6 + 24v - (-11) - (-v) = 42

6 + 24v + 11 + v = 42

25v + 17 = 42

25v = 25

v=1

here's the other problem's solution:

-2(-7k+4) + 9 = -13

(-2)*(-7k) -2(4) + 9 = -13

14k - 8 + 9 = -13

14k + 1 = -13

14k = -14

k = -1

Answer 4

-2(-7k+4)+9=-13         add 9

-2(7k+4)=-4                divide by -2

7k+4=2                       add 4

7k=6                           divide by 7

k=6/7                          it should be a decimal

6(1+4v)-(-11-v)=42    simplify the first parenthesis

6+24v-(-11-v)=42      simplify the second parenthesis     - (-11) =+11  

6+24v+11+v=42        simplify the equation

17+25v=42                subtract 17

25v=25                      divide by 25

v=1

Answer 5

for the first one i'll walk you through step by step. First you simplify the equation by multiplying 6 by everything in the parenthesis its touching. so you get 7+24v then you change the

- - to a plus because two negative signs always equal a positive. then you get 7+24v+11-v=42 so you simplify that to 19+23v=23.

V=1

for the second one the first step is to first use the distributive property to simplify the equation so you get 14k-8+9= -13

then you do14k=-14 so then you devide by a positive 14 so its

k=-1 because negative devided by a positive is always a negative. GOOD luck and dont be afraid to ask these questions because I LOVE LOVE LOVE answering these questions. Gets my braind started