40-3x=6x+21

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Solution for 40-3x=6x+21 equation:


Simplifying
40 + -3x = 6x + 21

Reorder the terms:
40 + -3x = 21 + 6x

Solving
40 + -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.
40 + -3x + -6x = 21 + 6x + -6x

Combine like terms: -3x + -6x = -9x
40 + -9x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
40 + -9x = 21 + 0
40 + -9x = 21

Add '-40' to each side of the equation.
40 + -40 + -9x = 21 + -40

Combine like terms: 40 + -40 = 0
0 + -9x = 21 + -40
-9x = 21 + -40

Combine like terms: 21 + -40 = -19
-9x = -19

Divide each side by '-9'.
x = 2.111111111

Simplifying
x = 2.111111111

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