(7x-9)-(18+-7)=10x+9-(7x+7)

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Solution for (7x-9)-(18+-7)=10x+9-(7x+7) equation:


Simplifying
(7x + -9) + -1(18 + -7) = 10x + 9 + -1(7x + 7)

Reorder the terms:
(-9 + 7x) + -1(18 + -7) = 10x + 9 + -1(7x + 7)

Remove parenthesis around (-9 + 7x)
-9 + 7x + -1(18 + -7) = 10x + 9 + -1(7x + 7)

Combine like terms: 18 + -7 = 11
-9 + 7x + -1(11) = 10x + 9 + -1(7x + 7)

Multiply -1 * 11
-9 + 7x + -11 = 10x + 9 + -1(7x + 7)

Reorder the terms:
-9 + -11 + 7x = 10x + 9 + -1(7x + 7)

Combine like terms: -9 + -11 = -20
-20 + 7x = 10x + 9 + -1(7x + 7)

Reorder the terms:
-20 + 7x = 10x + 9 + -1(7 + 7x)
-20 + 7x = 10x + 9 + (7 * -1 + 7x * -1)
-20 + 7x = 10x + 9 + (-7 + -7x)

Reorder the terms:
-20 + 7x = 9 + -7 + 10x + -7x

Combine like terms: 9 + -7 = 2
-20 + 7x = 2 + 10x + -7x

Combine like terms: 10x + -7x = 3x
-20 + 7x = 2 + 3x

Solving
-20 + 7x = 2 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-20 + 7x + -3x = 2 + 3x + -3x

Combine like terms: 7x + -3x = 4x
-20 + 4x = 2 + 3x + -3x

Combine like terms: 3x + -3x = 0
-20 + 4x = 2 + 0
-20 + 4x = 2

Add '20' to each side of the equation.
-20 + 20 + 4x = 2 + 20

Combine like terms: -20 + 20 = 0
0 + 4x = 2 + 20
4x = 2 + 20

Combine like terms: 2 + 20 = 22
4x = 22

Divide each side by '4'.
x = 5.5

Simplifying
x = 5.5

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