-21-10x=-3x

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Solution for -21-10x=-3x equation:


Simplifying
-21 + -10x = -3x

Solving
-21 + -10x = -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-21 + -10x + 3x = -3x + 3x

Combine like terms: -10x + 3x = -7x
-21 + -7x = -3x + 3x

Combine like terms: -3x + 3x = 0
-21 + -7x = 0

Add '21' to each side of the equation.
-21 + 21 + -7x = 0 + 21

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

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

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

Simplifying
x = -3

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