5x+3(2x+4)=7x-9

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Solution for 5x+3(2x+4)=7x-9 equation:


Simplifying
5x + 3(2x + 4) = 7x + -9

Reorder the terms:
5x + 3(4 + 2x) = 7x + -9
5x + (4 * 3 + 2x * 3) = 7x + -9
5x + (12 + 6x) = 7x + -9

Reorder the terms:
12 + 5x + 6x = 7x + -9

Combine like terms: 5x + 6x = 11x
12 + 11x = 7x + -9

Reorder the terms:
12 + 11x = -9 + 7x

Solving
12 + 11x = -9 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
12 + 11x + -7x = -9 + 7x + -7x

Combine like terms: 11x + -7x = 4x
12 + 4x = -9 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 + 4x = -9 + 0
12 + 4x = -9

Add '-12' to each side of the equation.
12 + -12 + 4x = -9 + -12

Combine like terms: 12 + -12 = 0
0 + 4x = -9 + -12
4x = -9 + -12

Combine like terms: -9 + -12 = -21
4x = -21

Divide each side by '4'.
x = -5.25

Simplifying
x = -5.25

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