45-3x=6x+21

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Solution for 45-3x=6x+21 equation:


Simplifying
45 + -3x = 6x + 21

Reorder the terms:
45 + -3x = 21 + 6x

Solving
45 + -3x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
45 + -3x + -6x = 21 + 6x + -6x

Combine like terms: -3x + -6x = -9x
45 + -9x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
45 + -9x = 21 + 0
45 + -9x = 21

Add '-45' to each side of the equation.
45 + -45 + -9x = 21 + -45

Combine like terms: 45 + -45 = 0
0 + -9x = 21 + -45
-9x = 21 + -45

Combine like terms: 21 + -45 = -24
-9x = -24

Divide each side by '-9'.
x = 2.666666667

Simplifying
x = 2.666666667

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