42-9=4+x-20

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Solution for 42-9=4+x-20 equation: 


Simplifying
42 + -9 = 4 + x + -20

Combine like terms: 42 + -9 = 33
33 = 4 + x + -20

Reorder the terms:
33 = 4 + -20 + x

Combine like terms: 4 + -20 = -16
33 = -16 + x

Solving
33 = -16 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
33 + -1x = -16 + x + -1x

Combine like terms: x + -1x = 0
33 + -1x = -16 + 0
33 + -1x = -16

Add '-33' to each side of the equation.
33 + -33 + -1x = -16 + -33

Combine like terms: 33 + -33 = 0
0 + -1x = -16 + -33
-1x = -16 + -33

Combine like terms: -16 + -33 = -49
-1x = -49

Divide each side by '-1'.
x = 49

Simplifying
x = 49

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