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

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


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

Reorder the terms:
2x + 7(4 + 3x) = 5x + -2(-5x + -9)
2x + (4 * 7 + 3x * 7) = 5x + -2(-5x + -9)
2x + (28 + 21x) = 5x + -2(-5x + -9)

Reorder the terms:
28 + 2x + 21x = 5x + -2(-5x + -9)

Combine like terms: 2x + 21x = 23x
28 + 23x = 5x + -2(-5x + -9)

Reorder the terms:
28 + 23x = 5x + -2(-9 + -5x)
28 + 23x = 5x + (-9 * -2 + -5x * -2)
28 + 23x = 5x + (18 + 10x)

Reorder the terms:
28 + 23x = 18 + 5x + 10x

Combine like terms: 5x + 10x = 15x
28 + 23x = 18 + 15x

Solving
28 + 23x = 18 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
28 + 23x + -15x = 18 + 15x + -15x

Combine like terms: 23x + -15x = 8x
28 + 8x = 18 + 15x + -15x

Combine like terms: 15x + -15x = 0
28 + 8x = 18 + 0
28 + 8x = 18

Add '-28' to each side of the equation.
28 + -28 + 8x = 18 + -28

Combine like terms: 28 + -28 = 0
0 + 8x = 18 + -28
8x = 18 + -28

Combine like terms: 18 + -28 = -10
8x = -10

Divide each side by '8'.
x = -1.25

Simplifying
x = -1.25

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