4*(-9)*(-20)=

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Solution for 4*(-9)*(-20)= equation: 


Simplifying
4(-9)(-20) = 0

Multiply 4 * -9
-36 * -20 = 0

Multiply -36 * -20
720 = 0

Solving
720 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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