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Simplifying
49r2 + -121 = 0
Reorder the terms:
-121 + 49r2 = 0
Solving
-121 + 49r2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '121' to each side of the equation.
-121 + 121 + 49r2 = 0 + 121
Combine like terms: -121 + 121 = 0
0 + 49r2 = 0 + 121
49r2 = 0 + 121
Combine like terms: 0 + 121 = 121
49r2 = 121
Divide each side by '49'.
r2 = 2.469387755
Simplifying
r2 = 2.469387755
Take the square root of each side:
r = {-1.571428571, 1.571428571}
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