Find all values of x satisfying the given conditions

Question

y1 = 8x+4(6+x), y2 = 3(x-7)+10x, and y1=y2

Answer 1

Since y1 = y2, the two equations are equal to each other.

8x + 4(6+x) = 3(x-7)+10x

8x + 24 +4x = 3x -21 + 10x

12x + 24 = 13x -21

-x = -45 or x = 45