(x+3)2-(x-1)2=7x

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Solution for (x+3)2-(x-1)2=7x equation:


Simplifying
(x + 3) * 2 + -1(x + -1) * 2 = 7x

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

Reorder the terms for easier multiplication:
2(3 + x) + -1(x + -1) * 2 = 7x
(3 * 2 + x * 2) + -1(x + -1) * 2 = 7x
(6 + 2x) + -1(x + -1) * 2 = 7x

Reorder the terms:
6 + 2x + -1(-1 + x) * 2 = 7x

Reorder the terms for easier multiplication:
6 + 2x + -1 * 2(-1 + x) = 7x

Multiply -1 * 2
6 + 2x + -2(-1 + x) = 7x
6 + 2x + (-1 * -2 + x * -2) = 7x
6 + 2x + (2 + -2x) = 7x

Reorder the terms:
6 + 2 + 2x + -2x = 7x

Combine like terms: 6 + 2 = 8
8 + 2x + -2x = 7x

Combine like terms: 2x + -2x = 0
8 + 0 = 7x
8 = 7x

Solving
8 = 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.
8 + -7x = 7x + -7x

Combine like terms: 7x + -7x = 0
8 + -7x = 0

Add '-8' to each side of the equation.
8 + -8 + -7x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -7x = 0 + -8
-7x = 0 + -8

Combine like terms: 0 + -8 = -8
-7x = -8

Divide each side by '-7'.
x = 1.142857143

Simplifying
x = 1.142857143

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