3x-48=21

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Solution for 3x-48=21 equation: 


Simplifying
3x + -48 = 21

Reorder the terms:
-48 + 3x = 21

Solving
-48 + 3x = 21

Solving for variable 'x'.

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

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 = 69
3x = 69

Divide each side by '3'.
x = 23

Simplifying
x = 23

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