30-10x=2x+21

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Solution for 30-10x=2x+21 equation:


Simplifying
30 + -10x = 2x + 21

Reorder the terms:
30 + -10x = 21 + 2x

Solving
30 + -10x = 21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
30 + -10x + -2x = 21 + 2x + -2x

Combine like terms: -10x + -2x = -12x
30 + -12x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
30 + -12x = 21 + 0
30 + -12x = 21

Add '-30' to each side of the equation.
30 + -30 + -12x = 21 + -30

Combine like terms: 30 + -30 = 0
0 + -12x = 21 + -30
-12x = 21 + -30

Combine like terms: 21 + -30 = -9
-12x = -9

Divide each side by '-12'.
x = 0.75

Simplifying
x = 0.75

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