40x*(1.5*7.5x)=1250

Solution for 40x*(1.5*7.5x)=1250 equation:

Simplifying
40x(1.5 * 7.5x) = 1250

Multiply 1.5 * 7.5
40x(11.25x) = 1250

Remove parenthesis around (11.25x)
40x * 11.25x = 1250

Reorder the terms for easier multiplication:
40 * 11.25x * x = 1250

Multiply 40 * 11.25
450x * x = 1250

Multiply x * x
450x2 = 1250

Solving
450x2 = 1250

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '450'.
x2 = 2.777777778

Simplifying
x2 = 2.777777778

Take the square root of each side:
x = {-1.666666667, 1.666666667}