You have the following equation:
4x + 10 = 22
in order to solve the previous equation, proceed as follow:
4x + 10 = 22 subtract 10 both sides
4x = 20 - 22 simplify left side
4x = 22 divide by 4 both sides
x = 22/4 simplify the fraction
x = 11/2
Hence, the value of x is 11/2 or 5 1/2