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Simplifying
-8 + 49r2 = -4
Solving
-8 + 49r2 = -4
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + 49r2 = -4 + 8
Combine like terms: -8 + 8 = 0
0 + 49r2 = -4 + 8
49r2 = -4 + 8
Combine like terms: -4 + 8 = 4
49r2 = 4
Divide each side by '49'.
r2 = 0.08163265306
Simplifying
r2 = 0.08163265306
Take the square root of each side:
r = {-0.285714286, 0.285714286}
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