Simplifying
7x(2x) = 56
Remove parenthesis around (2x)
7x * 2x = 56
Reorder the terms for easier multiplication:
7 * 2x * x = 56
Multiply 7 * 2
14x * x = 56
Multiply x * x
14x2 = 56
Solving
14x2 = 56
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '14'.
x2 = 4
Simplifying
x2 = 4