14x+5y=31 and 2x-3y=-29

yes is proportional

I will assume you are trying to find x and y. x = - 1, y = 0=9

Step-by-step explanation:

Multiply the second equation by 7 and subtract the two.

14x + 5y = 31

- (14x - 21y = - 203)

This gives 26y = 234. Divide both sides by 26. y = 9

Then substitute y into any equation. I'll use 2x - 3y = - 29

2x - 3 (9) = - 29

2x - 27 = - 29

2x = - 2

x = - 1