What is the value of the y variable in the solution to the following system of equations?
5x + 4y = 1
4x + 3y = -1

-7

7

9

-9

Question

What is the value of the y variable in the solution to the following system of equations?
5x + 4y = 1
4x + 3y = -1

 -7

 7

 9

 -9

anonymous · Answer

Multiply first equation with 4 and second with 5:

20x + 16y = 4
20x + 15 y = -5

Subtract them:

y = 4-(-5) = 4 + 5 = ??

Can you do it now?

Just to add 4 and 5..

anonymous · Answer

thank you! just so i did it right can you show me your answer so i can see what i did wrong

anonymous · Answer

Firstly tell me yours..

anonymous · Answer

y=29

anonymous · Answer

What will you get when you will add 4 and 5???

anonymous · Answer

.....ohh sorry 9

anonymous · Answer

Yes so this is the answer what is problem in that??

anonymous · Answer

..what?