Question

Solve the systems of equations by substituting
9) -7x-2y=-13
X-2y=11

Answer 1

From the second equation, we get:

x - 2y = 11

x = 2y + 11

Substituting x = 2y + 11 in the first equation:

-7(2y + 11) - 2y = -13

Simplifying:

-14y - 77 - 2y = -13

-16y = 64

y = -4

Substituting y = -4 in x = 2y + 11:

x = 2(-4) + 11 = 3

Therefore, the solution of the system of equations is (x, y) = (3, -4).