-40(-13)=x

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Solution for -40(-13)=x equation:


Simplifying
-40(-13) = x

Multiply -40 * -13
520 = x

Solving
520 = 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.
520 + -1x = x + -1x

Combine like terms: x + -1x = 0
520 + -1x = 0

Add '-520' to each side of the equation.
520 + -520 + -1x = 0 + -520

Combine like terms: 520 + -520 = 0
0 + -1x = 0 + -520
-1x = 0 + -520

Combine like terms: 0 + -520 = -520
-1x = -520

Divide each side by '-1'.
x = 520

Simplifying
x = 520

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