-3x+21=x+1

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Solution for -3x+21=x+1 equation:


Simplifying
-3x + 21 = x + 1

Reorder the terms:
21 + -3x = x + 1

Reorder the terms:
21 + -3x = 1 + x

Solving
21 + -3x = 1 + 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.
21 + -3x + -1x = 1 + x + -1x

Combine like terms: -3x + -1x = -4x
21 + -4x = 1 + x + -1x

Combine like terms: x + -1x = 0
21 + -4x = 1 + 0
21 + -4x = 1

Add '-21' to each side of the equation.
21 + -21 + -4x = 1 + -21

Combine like terms: 21 + -21 = 0
0 + -4x = 1 + -21
-4x = 1 + -21

Combine like terms: 1 + -21 = -20
-4x = -20

Divide each side by '-4'.
x = 5

Simplifying
x = 5

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