Use the combination method to solve for y: 5x + 3y = 12 and - 5x + 4y = 16

y = 4

y = 0

y = - 10

y = - 4

Question

Mathematics

Lea Soto

10 February, 20:35

Use the combination method to solve for y: 5x + 3y = 12 and - 5x + 4y = 16

y = 4

y = 0

y = - 10

y = - 4

+3

Answers (1)

Know the Answer?

Abraham Abbott · Answer 1

y = 4

Step-by-step explanation:

We have,

5x + 3y = 12 ... (1)

and

-5x + 4y = 16 ... (2)

Adding equation (1) and (2),

0 + 7y = 28

or

7y = 28

Dividing both sides by 7,

y = 4

So, the value of y = 4.

Use the combination method to solve for y: 5x + 3y = 12 and - 5x + 4y = 16y = 4y = 0y = - 10y = - 4

Use the combination method to solve for y: 5x + 3y = 12 and - 5x + 4y = 16

y = 4

y = 0

y = - 10

y = - 4