-3x-7*0=21

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Solution for -3x-7*0=21 equation: 


Simplifying
-3x + -7 * 0 = 21

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

Anything times zero is zero.
-3x + 0 = 21

Reorder the terms:
0 + -3x = 21
Remove the zero:
-3x = 21

Solving
-3x = 21

Solving for variable 'x'.

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

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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