75=42-3x

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Solution for 75=42-3x equation:


Simplifying
75 = 42 + -3x

Solving
75 = 42 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
75 + 3x = 42 + -3x + 3x

Combine like terms: -3x + 3x = 0
75 + 3x = 42 + 0
75 + 3x = 42

Add '-75' to each side of the equation.
75 + -75 + 3x = 42 + -75

Combine like terms: 75 + -75 = 0
0 + 3x = 42 + -75
3x = 42 + -75

Combine like terms: 42 + -75 = -33
3x = -33

Divide each side by '3'.
x = -11

Simplifying
x = -11

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