42x-21x=63

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Solution for 42x-21x=63 equation: 


Simplifying
42x + -21x = 63

Combine like terms: 42x + -21x = 21x
21x = 63

Solving
21x = 63

Solving for variable 'x'.

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

Divide each side by '21'.
x = 3

Simplifying
x = 3

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