261-3x=42x+21

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Solution for 261-3x=42x+21 equation:


Simplifying
261 + -3x = 42x + 21

Reorder the terms:
261 + -3x = 21 + 42x

Solving
261 + -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.
261 + -3x + -42x = 21 + 42x + -42x

Combine like terms: -3x + -42x = -45x
261 + -45x = 21 + 42x + -42x

Combine like terms: 42x + -42x = 0
261 + -45x = 21 + 0
261 + -45x = 21

Add '-261' to each side of the equation.
261 + -261 + -45x = 21 + -261

Combine like terms: 261 + -261 = 0
0 + -45x = 21 + -261
-45x = 21 + -261

Combine like terms: 21 + -261 = -240
-45x = -240

Divide each side by '-45'.
x = 5.333333333

Simplifying
x = 5.333333333

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