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

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


Simplifying
7x + -1(9x + 7) = 9 + -1(4x + -5)

Reorder the terms:
7x + -1(7 + 9x) = 9 + -1(4x + -5)
7x + (7 * -1 + 9x * -1) = 9 + -1(4x + -5)
7x + (-7 + -9x) = 9 + -1(4x + -5)

Reorder the terms:
-7 + 7x + -9x = 9 + -1(4x + -5)

Combine like terms: 7x + -9x = -2x
-7 + -2x = 9 + -1(4x + -5)

Reorder the terms:
-7 + -2x = 9 + -1(-5 + 4x)
-7 + -2x = 9 + (-5 * -1 + 4x * -1)
-7 + -2x = 9 + (5 + -4x)

Combine like terms: 9 + 5 = 14
-7 + -2x = 14 + -4x

Solving
-7 + -2x = 14 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-7 + -2x + 4x = 14 + -4x + 4x

Combine like terms: -2x + 4x = 2x
-7 + 2x = 14 + -4x + 4x

Combine like terms: -4x + 4x = 0
-7 + 2x = 14 + 0
-7 + 2x = 14

Add '7' to each side of the equation.
-7 + 7 + 2x = 14 + 7

Combine like terms: -7 + 7 = 0
0 + 2x = 14 + 7
2x = 14 + 7

Combine like terms: 14 + 7 = 21
2x = 21

Divide each side by '2'.
x = 10.5

Simplifying
x = 10.5

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