-3(0+7)+5*0=-21

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Solution for -3(0+7)+5*0=-21 equation: 


Simplifying
-3(0 + 7) + 5 * 0 = -21

Combine like terms: 0 + 7 = 7
-3(7) + 5 * 0 = -21

Multiply -3 * 7
-21 + 5 * 0 = -21

Multiply 5 * 0
-21 + 0 = -21

Anything times zero is zero.
-21 + 0 = -21

Combine like terms: -21 + 0 = -21
-21 = -21

Add '21' to each side of the equation.
-21 + 21 = -21 + 21

Combine like terms: -21 + 21 = 0
0 = -21 + 21

Combine like terms: -21 + 21 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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