21-4x=71

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Solution for 21-4x=71 equation: 


Simplifying
21 + -4x = 71

Solving
21 + -4x = 71

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 = 71 + -21

Combine like terms: 21 + -21 = 0
0 + -4x = 71 + -21
-4x = 71 + -21

Combine like terms: 71 + -21 = 50
-4x = 50

Divide each side by '-4'.
x = -12.5

Simplifying
x = -12.5

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