r^2-7x-18=0

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Solution for r^2-7x-18=0 equation:


Simplifying
r2 + -7x + -18 = 0

Reorder the terms:
-18 + r2 + -7x = 0

Solving
-18 + r2 + -7x = 0

Solving for variable 'r'.

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

Add '18' to each side of the equation.
-18 + r2 + 18 + -7x = 0 + 18

Reorder the terms:
-18 + 18 + r2 + -7x = 0 + 18

Combine like terms: -18 + 18 = 0
0 + r2 + -7x = 0 + 18
r2 + -7x = 0 + 18

Combine like terms: 0 + 18 = 18
r2 + -7x = 18

Add '7x' to each side of the equation.
r2 + -7x + 7x = 18 + 7x

Combine like terms: -7x + 7x = 0
r2 + 0 = 18 + 7x
r2 = 18 + 7x

Simplifying
r2 = 18 + 7x

Reorder the terms:
-18 + r2 + -7x = 18 + 7x + -18 + -7x

Reorder the terms:
-18 + r2 + -7x = 18 + -18 + 7x + -7x

Combine like terms: 18 + -18 = 0
-18 + r2 + -7x = 0 + 7x + -7x
-18 + r2 + -7x = 7x + -7x

Combine like terms: 7x + -7x = 0
-18 + r2 + -7x = 0

The solution to this equation could not be determined.

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