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

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Solution for (7x+4)-(x-9)=1 equation:


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

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

Remove parenthesis around (4 + 7x)
4 + 7x + -1(x + -9) = 1

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

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

Combine like terms: 4 + 9 = 13
13 + 7x + -1x = 1

Combine like terms: 7x + -1x = 6x
13 + 6x = 1

Solving
13 + 6x = 1

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 6x = 1 + -13

Combine like terms: 13 + -13 = 0
0 + 6x = 1 + -13
6x = 1 + -13

Combine like terms: 1 + -13 = -12
6x = -12

Divide each side by '6'.
x = -2

Simplifying
x = -2

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