-[9x-(7x+1)]=1+(7x+9)

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Solution for -[9x-(7x+1)]=1+(7x+9) equation:


Simplifying
-1[9x + -1(7x + 1)] = 1 + (7x + 9)

Reorder the terms:
-1[9x + -1(1 + 7x)] = 1 + (7x + 9)
-1[9x + (1 * -1 + 7x * -1)] = 1 + (7x + 9)
-1[9x + (-1 + -7x)] = 1 + (7x + 9)

Reorder the terms:
-1[-1 + 9x + -7x] = 1 + (7x + 9)

Combine like terms: 9x + -7x = 2x
-1[-1 + 2x] = 1 + (7x + 9)
[-1 * -1 + 2x * -1] = 1 + (7x + 9)
[1 + -2x] = 1 + (7x + 9)

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

Remove parenthesis around (9 + 7x)
1 + -2x = 1 + 9 + 7x

Combine like terms: 1 + 9 = 10
1 + -2x = 10 + 7x

Solving
1 + -2x = 10 + 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.
1 + -2x + -7x = 10 + 7x + -7x

Combine like terms: -2x + -7x = -9x
1 + -9x = 10 + 7x + -7x

Combine like terms: 7x + -7x = 0
1 + -9x = 10 + 0
1 + -9x = 10

Add '-1' to each side of the equation.
1 + -1 + -9x = 10 + -1

Combine like terms: 1 + -1 = 0
0 + -9x = 10 + -1
-9x = 10 + -1

Combine like terms: 10 + -1 = 9
-9x = 9

Divide each side by '-9'.
x = -1

Simplifying
x = -1

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