X + 5+11x=12x+Y It says find the value of y that makes each equation true for all values of

X + 5 + 11x = 12x + y

Simplify: 12x + 5 = 12x + y (We are adding x and 11x on the left side)

Subtract 12x from each side makes each zero.

5 = y

So we can plug in and test. I'm picking two random numbers to plug in for x. 10, and 82

x = 10, y = 5

10 + 5 + 11 (10) = 12 (10) + 5

125 = 125

x = 82, y = 5

82 + 5 + 11 (82) = 12 (82) + 5

989 = 989

So we verified y = 5