4(4)(-20)=x

Solution for 4(4)(-20)=x equation:

Simplifying
4(4)(-20) = x

Multiply 4 * 4
16 * -20 = x

Multiply 16 * -20
-320 = x

Solving
-320 = 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.
-320 + -1x = x + -1x

Combine like terms: x + -1x = 0
-320 + -1x = 0

Add '320' to each side of the equation.
-320 + 320 + -1x = 0 + 320

Combine like terms: -320 + 320 = 0
0 + -1x = 0 + 320
-1x = 0 + 320

Combine like terms: 0 + 320 = 320
-1x = 320

Divide each side by '-1'.
x = -320

Simplifying
x = -320