18+7x=10+7x-5x^2

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Solution for 18+7x=10+7x-5x^2 equation:


Simplifying
18 + 7x = 10 + 7x + -5x2

Add '-7x' to each side of the equation.
18 + 7x + -7x = 10 + 7x + -7x + -5x2

Combine like terms: 7x + -7x = 0
18 + 0 = 10 + 7x + -7x + -5x2
18 = 10 + 7x + -7x + -5x2

Combine like terms: 7x + -7x = 0
18 = 10 + 0 + -5x2
18 = 10 + -5x2

Solving
18 = 10 + -5x2

Solving for variable 'x'.

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

Add '5x2' to each side of the equation.
18 + 5x2 = 10 + -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
18 + 5x2 = 10 + 0
18 + 5x2 = 10

Add '-18' to each side of the equation.
18 + -18 + 5x2 = 10 + -18

Combine like terms: 18 + -18 = 0
0 + 5x2 = 10 + -18
5x2 = 10 + -18

Combine like terms: 10 + -18 = -8
5x2 = -8

Divide each side by '5'.
x2 = -1.6

Simplifying
x2 = -1.6

Reorder the terms:
1.6 + x2 = -1.6 + 1.6

Combine like terms: -1.6 + 1.6 = 0.0
1.6 + x2 = 0.0

The solution to this equation could not be determined.

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