-4=-21-5x

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Solution for -4=-21-5x equation:


Simplifying
-4 = -21 + -5x

Solving
-4 = -21 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-4 + 5x = -21 + -5x + 5x

Combine like terms: -5x + 5x = 0
-4 + 5x = -21 + 0
-4 + 5x = -21

Add '4' to each side of the equation.
-4 + 4 + 5x = -21 + 4

Combine like terms: -4 + 4 = 0
0 + 5x = -21 + 4
5x = -21 + 4

Combine like terms: -21 + 4 = -17
5x = -17

Divide each side by '5'.
x = -3.4

Simplifying
x = -3.4

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