43-4x=52-21

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Solution for 43-4x=52-21 equation: 


Simplifying
43 + -4x = 52 + -21

Combine like terms: 52 + -21 = 31
43 + -4x = 31

Solving
43 + -4x = 31

Solving for variable 'x'.

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

Add '-43' to each side of the equation.
43 + -43 + -4x = 31 + -43

Combine like terms: 43 + -43 = 0
0 + -4x = 31 + -43
-4x = 31 + -43

Combine like terms: 31 + -43 = -12
-4x = -12

Divide each side by '-4'.
x = 3

Simplifying
x = 3

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