Question

Use elimination to solve 4x-3y=-1 2x+5y=19

Answer 1

x=2, y=3

(2,3) or (2,0), (0,3)

Explanation:

solve for y (make x=0)

4x-3y=-1

-2(2x+5y)=(19)-2

4x-3y=-1

-4x-10y=-38

-13y=-39

-13y/-13=-39/-13

y=3

solve for x (make y=0)

5(4x-3y)=(-1)5

3(2x+5y)=(19)3

20x-15y=-5

6x+15y=57

26x=52

26x/26=52/26

x=2