7x-(5x-1)=9

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Solution for 7x-(5x-1)=9 equation:


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

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

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

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

Solving
1 + 2x = 9

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 2x = 9 + -1

Combine like terms: 1 + -1 = 0
0 + 2x = 9 + -1
2x = 9 + -1

Combine like terms: 9 + -1 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

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