#color(indigo)("Multiply 3 on both sides to get rid of the denominator:")#
#4xx3=(5z+2)/cancel3##xxcancel3#
#color(hotpink)("Subtract 2 on both sides to get the constant by itself:")#
#12 = 5z+2#
#-2 color(white)(aaaa) -2#
#10=5z#
#color(green)("Divide both sides by 5 to find z:")#
#10/5=(cancel5z)/cancel5#
#2=z#