Solving equation algebra 2!?

Question

how would u go about solving this

7y+4=3-2y?

thanks!

Answer 1

7y+4=3-2y

    -4  -4

7y=-1-2y

+2y   +2y

5y= -1

divide by 5 on both sides and answer should be -1/5

Answer 2

7y+4=3-2y

-4        -4

7y=-1-2y

+2y  +2y

9y=-1

divide by 9 on both sides

y=-1 over 9

first guy did 7-2 instead of 7+2, thats why he got -1 over 5

                                                                      

Answer 3

7y+4=3-2y

+2y    +2y

9y+4=3

    -4  -4

9y=-1

divide by 9 on both sides your answer should be -1/9

the first person sutracted the 2y instead of adding it so dont go with that answer

Answer 4

What bria_sullivan said but you add 2y to 7y not subtract to get 9y not 5y. so -1/9.

Also, I'm only in geometry and i took algebra last year so if that's algebra 2 next year will be easy.  

Answer 5

Heh, I love algebra :P It should go like this.

7y+4=3-2y

....-3..-3

This crosses out the 3 and subtract -3 to 4 which =1

7y+1=-2y

You can't subtract 2y to 7y because you can't cross out the 2y, something has to stay on each side of the = sign.

7y+1=-2y

-7y.....-7y

7y-7y crosses it out, Y is gone.

1=-9y     -2-7 addes up to negative 9. You must get rid of the y so divide it by -9 on both sides

1=-9y

-9.-9  

Now Cross out the 9 0n the right and your results for the answer should be  ******-1/9=y******

Or you could do it the other way around, Subtract 4 instead of 3, or 7y instead of 2y, but be sure there is a "=" sign. I just go with the simplest way to do it. Hoped this helped!

Answer 6

THAT'S Algebra 2? Geez, I'm going to have an easy year.