6x-21+45=90

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Solution for 6x-21+45=90 equation:


Simplifying
6x + -21 + 45 = 90

Reorder the terms:
-21 + 45 + 6x = 90

Combine like terms: -21 + 45 = 24
24 + 6x = 90

Solving
24 + 6x = 90

Solving for variable 'x'.

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

Add '-24' to each side of the equation.
24 + -24 + 6x = 90 + -24

Combine like terms: 24 + -24 = 0
0 + 6x = 90 + -24
6x = 90 + -24

Combine like terms: 90 + -24 = 66
6x = 66

Divide each side by '6'.
x = 11

Simplifying
x = 11

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