3-3x-5x=-21

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


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

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

Solving
3 + -8x = -21

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + -8x = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -8x = -21 + -3
-8x = -21 + -3

Combine like terms: -21 + -3 = -24
-8x = -24

Divide each side by '-8'.
x = 3

Simplifying
x = 3

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