What is the average height of a 12 year old asian boy?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Equation for the calculation double 2 and then add 5

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so