7X-(5X-4)=12

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Solution for 7X-(5X-4)=12 equation:


Simplifying
7X + -1(5X + -4) = 12

Reorder the terms:
7X + -1(-4 + 5X) = 12
7X + (-4 * -1 + 5X * -1) = 12
7X + (4 + -5X) = 12

Reorder the terms:
4 + 7X + -5X = 12

Combine like terms: 7X + -5X = 2X
4 + 2X = 12

Solving
4 + 2X = 12

Solving for variable 'X'.

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

Add '-4' to each side of the equation.
4 + -4 + 2X = 12 + -4

Combine like terms: 4 + -4 = 0
0 + 2X = 12 + -4
2X = 12 + -4

Combine like terms: 12 + -4 = 8
2X = 8

Divide each side by '2'.
X = 4

Simplifying
X = 4

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