166-3x=42x+21

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Solution for 166-3x=42x+21 equation:


Simplifying
166 + -3x = 42x + 21

Reorder the terms:
166 + -3x = 21 + 42x

Solving
166 + -3x = 21 + 42x

Solving for variable 'x'.

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

Add '-42x' to each side of the equation.
166 + -3x + -42x = 21 + 42x + -42x

Combine like terms: -3x + -42x = -45x
166 + -45x = 21 + 42x + -42x

Combine like terms: 42x + -42x = 0
166 + -45x = 21 + 0
166 + -45x = 21

Add '-166' to each side of the equation.
166 + -166 + -45x = 21 + -166

Combine like terms: 166 + -166 = 0
0 + -45x = 21 + -166
-45x = 21 + -166

Combine like terms: 21 + -166 = -145
-45x = -145

Divide each side by '-45'.
x = 3.222222222

Simplifying
x = 3.222222222

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