Question

What is the x cordinate of the solution​

Answer 1

x = - 4

Explanation:

Given the 2 equations

y = - 2x - 5 → (1)

y = x + 7 → (2)

Substitute y = x + 7 into (1)

x + 7 = - 2x - 5 ( add 2x to both sides )

3x + 7 = - 5 ( subtract 7 from both sides )

3x = - 12 ( divide both sides by 3 )

x = - 4