Question

Solve the system of linear equations using elimination. −2x − y = 3 −9x − y = 17

Answer 1

x=20/7 y=17

Explanation:

Answer 2

Answer: x=20/7 y=17

Explanation:

1) Don't need to solve for y since y is already solved.

2) Solve for x:

-2x-17=-9x+3

-2x-17+9x=-9x+3+9x (Add 9x to both sides)

7x-17=3

7x-17+17=3+17 (Add 17 to both sides)

7x=20( Divide both sides by 7)

x=20/7, y=17