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Simplifying
-6 + -10r2 = -156
Solving
-6 + -10r2 = -156
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '6' to each side of the equation.
-6 + 6 + -10r2 = -156 + 6
Combine like terms: -6 + 6 = 0
0 + -10r2 = -156 + 6
-10r2 = -156 + 6
Combine like terms: -156 + 6 = -150
-10r2 = -150
Divide each side by '-10'.
r2 = 15
Simplifying
r2 = 15
Take the square root of each side:
r = {-3.872983346, 3.872983346}
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