x+48=4x+21

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Solution for x+48=4x+21 equation:


Simplifying
x + 48 = 4x + 21

Reorder the terms:
48 + x = 4x + 21

Reorder the terms:
48 + x = 21 + 4x

Solving
48 + x = 21 + 4x

Solving for variable 'x'.

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

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

Combine like terms: x + -4x = -3x
48 + -3x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
48 + -3x = 21 + 0
48 + -3x = 21

Add '-48' to each side of the equation.
48 + -48 + -3x = 21 + -48

Combine like terms: 48 + -48 = 0
0 + -3x = 21 + -48
-3x = 21 + -48

Combine like terms: 21 + -48 = -27
-3x = -27

Divide each side by '-3'.
x = 9

Simplifying
x = 9

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