-5-3x-5x=-21

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Solution for -5-3x-5x=-21 equation: 


Simplifying
-5 + -3x + -5x = -21

Combine like terms: -3x + -5x = -8x
-5 + -8x = -21

Solving
-5 + -8x = -21

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + -8x = -21 + 5

Combine like terms: -5 + 5 = 0
0 + -8x = -21 + 5
-8x = -21 + 5

Combine like terms: -21 + 5 = -16
-8x = -16

Divide each side by '-8'.
x = 2

Simplifying
x = 2

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