Question

how do you figure this out step-by-step?

5x + 3y = 10
6x + 3y = 33

Answer 1

Multiply the second equation by -1.

5x+3y=10

-6x-3y=-33

The postive and negative 3ys cancel

-x=-23

x=23

Answer 2

10=5x-3y=3xy+10=13xy