(2x-5)2-(x+1)2=7x

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Solution for (2x-5)2-(x+1)2=7x equation:


Simplifying
(2x + -5) * 2 + -1(x + 1) * 2 = 7x

Reorder the terms:
(-5 + 2x) * 2 + -1(x + 1) * 2 = 7x

Reorder the terms for easier multiplication:
2(-5 + 2x) + -1(x + 1) * 2 = 7x
(-5 * 2 + 2x * 2) + -1(x + 1) * 2 = 7x
(-10 + 4x) + -1(x + 1) * 2 = 7x

Reorder the terms:
-10 + 4x + -1(1 + x) * 2 = 7x

Reorder the terms for easier multiplication:
-10 + 4x + -1 * 2(1 + x) = 7x

Multiply -1 * 2
-10 + 4x + -2(1 + x) = 7x
-10 + 4x + (1 * -2 + x * -2) = 7x
-10 + 4x + (-2 + -2x) = 7x

Reorder the terms:
-10 + -2 + 4x + -2x = 7x

Combine like terms: -10 + -2 = -12
-12 + 4x + -2x = 7x

Combine like terms: 4x + -2x = 2x
-12 + 2x = 7x

Solving
-12 + 2x = 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.
-12 + 2x + -7x = 7x + -7x

Combine like terms: 2x + -7x = -5x
-12 + -5x = 7x + -7x

Combine like terms: 7x + -7x = 0
-12 + -5x = 0

Add '12' to each side of the equation.
-12 + 12 + -5x = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -5x = 0 + 12
-5x = 0 + 12

Combine like terms: 0 + 12 = 12
-5x = 12

Divide each side by '-5'.
x = -2.4

Simplifying
x = -2.4

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