-7-3r^2=-151

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Solution for -7-3r^2=-151 equation:


Simplifying
-7 + -3r2 = -151

Solving
-7 + -3r2 = -151

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + -3r2 = -151 + 7

Combine like terms: -7 + 7 = 0
0 + -3r2 = -151 + 7
-3r2 = -151 + 7

Combine like terms: -151 + 7 = -144
-3r2 = -144

Divide each side by '-3'.
r2 = 48

Simplifying
r2 = 48

Take the square root of each side:
r = {-6.92820323, 6.92820323}

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