105-7x=20x+21

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Solution for 105-7x=20x+21 equation:


Simplifying
105 + -7x = 20x + 21

Reorder the terms:
105 + -7x = 21 + 20x

Solving
105 + -7x = 21 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
105 + -7x + -20x = 21 + 20x + -20x

Combine like terms: -7x + -20x = -27x
105 + -27x = 21 + 20x + -20x

Combine like terms: 20x + -20x = 0
105 + -27x = 21 + 0
105 + -27x = 21

Add '-105' to each side of the equation.
105 + -105 + -27x = 21 + -105

Combine like terms: 105 + -105 = 0
0 + -27x = 21 + -105
-27x = 21 + -105

Combine like terms: 21 + -105 = -84
-27x = -84

Divide each side by '-27'.
x = 3.111111111

Simplifying
x = 3.111111111

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