(x^2+8x-4)-(7x+5)=x^2-8

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Solution for (x^2+8x-4)-(7x+5)=x^2-8 equation:


Simplifying
(x2 + 8x + -4) + -1(7x + 5) = x2 + -8

Reorder the terms:
(-4 + 8x + x2) + -1(7x + 5) = x2 + -8

Remove parenthesis around (-4 + 8x + x2)
-4 + 8x + x2 + -1(7x + 5) = x2 + -8

Reorder the terms:
-4 + 8x + x2 + -1(5 + 7x) = x2 + -8
-4 + 8x + x2 + (5 * -1 + 7x * -1) = x2 + -8
-4 + 8x + x2 + (-5 + -7x) = x2 + -8

Reorder the terms:
-4 + -5 + 8x + -7x + x2 = x2 + -8

Combine like terms: -4 + -5 = -9
-9 + 8x + -7x + x2 = x2 + -8

Combine like terms: 8x + -7x = 1x
-9 + 1x + x2 = x2 + -8

Reorder the terms:
-9 + 1x + x2 = -8 + x2

Add '-1x2' to each side of the equation.
-9 + 1x + x2 + -1x2 = -8 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + 1x + 0 = -8 + x2 + -1x2
-9 + 1x = -8 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + 1x = -8 + 0
-9 + 1x = -8

Solving
-9 + 1x = -8

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 1x = -8 + 9

Combine like terms: -9 + 9 = 0
0 + 1x = -8 + 9
1x = -8 + 9

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

Divide each side by '1'.
x = 1

Simplifying
x = 1

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