r^2-4x-91=7

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Solution for r^2-4x-91=7 equation:


Simplifying
r2 + -4x + -91 = 7

Reorder the terms:
-91 + r2 + -4x = 7

Solving
-91 + r2 + -4x = 7

Solving for variable 'r'.

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

Add '91' to each side of the equation.
-91 + r2 + 91 + -4x = 7 + 91

Reorder the terms:
-91 + 91 + r2 + -4x = 7 + 91

Combine like terms: -91 + 91 = 0
0 + r2 + -4x = 7 + 91
r2 + -4x = 7 + 91

Combine like terms: 7 + 91 = 98
r2 + -4x = 98

Add '4x' to each side of the equation.
r2 + -4x + 4x = 98 + 4x

Combine like terms: -4x + 4x = 0
r2 + 0 = 98 + 4x
r2 = 98 + 4x

Simplifying
r2 = 98 + 4x

Reorder the terms:
-98 + r2 + -4x = 98 + 4x + -98 + -4x

Reorder the terms:
-98 + r2 + -4x = 98 + -98 + 4x + -4x

Combine like terms: 98 + -98 = 0
-98 + r2 + -4x = 0 + 4x + -4x
-98 + r2 + -4x = 4x + -4x

Combine like terms: 4x + -4x = 0
-98 + r2 + -4x = 0

The solution to this equation could not be determined.

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