-7(-4)(-5)=x

Solution for -7(-4)(-5)=x equation:

Simplifying
-7(-4)(-5) = x

Multiply -7 * -4
28 * -5 = x

Multiply 28 * -5
-140 = x

Solving
-140 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-140 + -1x = x + -1x

Combine like terms: x + -1x = 0
-140 + -1x = 0

Add '140' to each side of the equation.
-140 + 140 + -1x = 0 + 140

Combine like terms: -140 + 140 = 0
0 + -1x = 0 + 140
-1x = 0 + 140

Combine like terms: 0 + 140 = 140
-1x = 140

Divide each side by '-1'.
x = -140

Simplifying
x = -140