-7(x-10)=21

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Solution for -7(x-10)=21 equation: 


Simplifying
-7(x + -10) = 21

Reorder the terms:
-7(-10 + x) = 21
(-10 * -7 + x * -7) = 21
(70 + -7x) = 21

Solving
70 + -7x = 21

Solving for variable 'x'.

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

Add '-70' to each side of the equation.
70 + -70 + -7x = 21 + -70

Combine like terms: 70 + -70 = 0
0 + -7x = 21 + -70
-7x = 21 + -70

Combine like terms: 21 + -70 = -49
-7x = -49

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

Simplifying
x = 7

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