7+-1(2x+9)=8x

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Solution for 7+-1(2x+9)=8x equation:


Simplifying
7 + -1(2x + 9) = 8x

Reorder the terms:
7 + -1(9 + 2x) = 8x
7 + (9 * -1 + 2x * -1) = 8x
7 + (-9 + -2x) = 8x

Combine like terms: 7 + -9 = -2
-2 + -2x = 8x

Solving
-2 + -2x = 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-2 + -2x + -8x = 8x + -8x

Combine like terms: -2x + -8x = -10x
-2 + -10x = 8x + -8x

Combine like terms: 8x + -8x = 0
-2 + -10x = 0

Add '2' to each side of the equation.
-2 + 2 + -10x = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -10x = 0 + 2
-10x = 0 + 2

Combine like terms: 0 + 2 = 2
-10x = 2

Divide each side by '-10'.
x = -0.2

Simplifying
x = -0.2

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