49-3x=x+21

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Solution for 49-3x=x+21 equation:


Simplifying
49 + -3x = x + 21

Reorder the terms:
49 + -3x = 21 + x

Solving
49 + -3x = 21 + 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.
49 + -3x + -1x = 21 + x + -1x

Combine like terms: -3x + -1x = -4x
49 + -4x = 21 + x + -1x

Combine like terms: x + -1x = 0
49 + -4x = 21 + 0
49 + -4x = 21

Add '-49' to each side of the equation.
49 + -49 + -4x = 21 + -49

Combine like terms: 49 + -49 = 0
0 + -4x = 21 + -49
-4x = 21 + -49

Combine like terms: 21 + -49 = -28
-4x = -28

Divide each side by '-4'.
x = 7

Simplifying
x = 7

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