Question

Solve the systems of substitution(find out what number x is and what number y is)

y=2x+5
y=3x+11

Answer 1

(x, y) = (-6, -7)

Explanation:

Substitute for y:

2x +5 = 3x +11 . . . . . use the first expression for y in the second equation

0 = x +6 . . . . . . . . . . subtract 2x+5

-6 = x . . . . . . . . . . . . add -6

y = 2(-6) +5 = -7 . . . .substitute for x

The solution is x = -6, y = -7.