3(x-7)+4x=9(x+2)

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Solution for 3(x-7)+4x=9(x+2) equation:


Simplifying
3(x + -7) + 4x = 9(x + 2)

Reorder the terms:
3(-7 + x) + 4x = 9(x + 2)
(-7 * 3 + x * 3) + 4x = 9(x + 2)
(-21 + 3x) + 4x = 9(x + 2)

Combine like terms: 3x + 4x = 7x
-21 + 7x = 9(x + 2)

Reorder the terms:
-21 + 7x = 9(2 + x)
-21 + 7x = (2 * 9 + x * 9)
-21 + 7x = (18 + 9x)

Solving
-21 + 7x = 18 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-21 + 7x + -9x = 18 + 9x + -9x

Combine like terms: 7x + -9x = -2x
-21 + -2x = 18 + 9x + -9x

Combine like terms: 9x + -9x = 0
-21 + -2x = 18 + 0
-21 + -2x = 18

Add '21' to each side of the equation.
-21 + 21 + -2x = 18 + 21

Combine like terms: -21 + 21 = 0
0 + -2x = 18 + 21
-2x = 18 + 21

Combine like terms: 18 + 21 = 39
-2x = 39

Divide each side by '-2'.
x = -19.5

Simplifying
x = -19.5

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