-4x+21=-13

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Solution for -4x+21=-13 equation: 


Simplifying
-4x + 21 = -13

Reorder the terms:
21 + -4x = -13

Solving
21 + -4x = -13

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + -4x = -13 + -21

Combine like terms: 21 + -21 = 0
0 + -4x = -13 + -21
-4x = -13 + -21

Combine like terms: -13 + -21 = -34
-4x = -34

Divide each side by '-4'.
x = 8.5

Simplifying
x = 8.5

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