-7x-3*0=21

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


Simplifying
-7x + -3 * 0 = 21

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

Anything times zero is zero.
-7x + 0 = 21

Reorder the terms:
0 + -7x = 21
Remove the zero:
-7x = 21

Solving
-7x = 21

Solving for variable 'x'.

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

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

Simplifying
x = -3

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