55+25-x=57

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Solution for 55+25-x=57 equation:


Simplifying
55 + 25 + -1x = 57

Combine like terms: 55 + 25 = 80
80 + -1x = 57

Solving
80 + -1x = 57

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + -1x = 57 + -80

Combine like terms: 80 + -80 = 0
0 + -1x = 57 + -80
-1x = 57 + -80

Combine like terms: 57 + -80 = -23
-1x = -23

Divide each side by '-1'.
x = 23

Simplifying
x = 23

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