3+-21+5x=-21

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


Simplifying
3 + -21 + 5x = -21

Combine like terms: 3 + -21 = -18
-18 + 5x = -21

Solving
-18 + 5x = -21

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 5x = -21 + 18

Combine like terms: -18 + 18 = 0
0 + 5x = -21 + 18
5x = -21 + 18

Combine like terms: -21 + 18 = -3
5x = -3

Divide each side by '5'.
x = -0.6

Simplifying
x = -0.6

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