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

Question

Mathematics

Newt

23 December, 15:33

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

+3

Answers (2)

Know the Answer?

Brooks Mosley · Answer 1

x=20/7 y=17

Giovanny Francis · Answer 2

Answer: x=20/7 y=17

Step-by-step 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