Question

Solve the system of equations 7x - y = -13 and -3x - y = -3 by combining the equations

Answer 1

The answer to your question is (-1, 6)

Explanation:

Data

7x - y = -13 Equation l

-3x - y = -3 Equation ll

-Solve equation l for y

y = 7x + 13 Equation lll

-Substitute equation lll in equation ll

-3x - (7x + 13) = -3

-Solve for x

-3x - 7x - 13 = -3

-10x = 13 - 3

-10x = 10

x = 10/-10

x = -1

-Substitute x in equation lll

y = 7(-1) + 13

y = -7 + 13

y = 6