2x-7(3+x)=x+9

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Solution for 2x-7(3+x)=x+9 equation:


Simplifying
2x + -7(3 + x) = x + 9
2x + (3 * -7 + x * -7) = x + 9
2x + (-21 + -7x) = x + 9

Reorder the terms:
-21 + 2x + -7x = x + 9

Combine like terms: 2x + -7x = -5x
-21 + -5x = x + 9

Reorder the terms:
-21 + -5x = 9 + x

Solving
-21 + -5x = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-21 + -5x + -1x = 9 + x + -1x

Combine like terms: -5x + -1x = -6x
-21 + -6x = 9 + x + -1x

Combine like terms: x + -1x = 0
-21 + -6x = 9 + 0
-21 + -6x = 9

Add '21' to each side of the equation.
-21 + 21 + -6x = 9 + 21

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

Combine like terms: 9 + 21 = 30
-6x = 30

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

Simplifying
x = -5

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