(X*7)-(500+X)=(500-100)

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Solution for (X*7)-(500+X)=(500-100) equation:


Simplifying
(X * 7) + -1(500 + X) = (500 + -100)

Reorder the terms for easier multiplication:
(7X) + -1(500 + X) = (500 + -100)
(7X) + (500 * -1 + X * -1) = (500 + -100)
(7X) + (-500 + -1X) = (500 + -100)

Reorder the terms:
-500 + (7X) + -1X = (500 + -100)

Combine like terms: (7X) + -1X = 6X
-500 + 6X = (500 + -100)

Combine like terms: 500 + -100 = 400
-500 + 6X = (400)
-500 + 6X = 400

Solving
-500 + 6X = 400

Solving for variable 'X'.

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

Add '500' to each side of the equation.
-500 + 500 + 6X = 400 + 500

Combine like terms: -500 + 500 = 0
0 + 6X = 400 + 500
6X = 400 + 500

Combine like terms: 400 + 500 = 900
6X = 900

Divide each side by '6'.
X = 150

Simplifying
X = 150

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