21+9x=11+2(-10+7x)

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Solution for 21+9x=11+2(-10+7x) equation:


Simplifying
21 + 9x = 11 + 2(-10 + 7x)
21 + 9x = 11 + (-10 * 2 + 7x * 2)
21 + 9x = 11 + (-20 + 14x)

Combine like terms: 11 + -20 = -9
21 + 9x = -9 + 14x

Solving
21 + 9x = -9 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
21 + 9x + -14x = -9 + 14x + -14x

Combine like terms: 9x + -14x = -5x
21 + -5x = -9 + 14x + -14x

Combine like terms: 14x + -14x = 0
21 + -5x = -9 + 0
21 + -5x = -9

Add '-21' to each side of the equation.
21 + -21 + -5x = -9 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = -9 + -21
-5x = -9 + -21

Combine like terms: -9 + -21 = -30
-5x = -30

Divide each side by '-5'.
x = 6

Simplifying
x = 6

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