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Simplifying
36k2 + -7 = 18
Reorder the terms:
-7 + 36k2 = 18
Solving
-7 + 36k2 = 18
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 36k2 = 18 + 7
Combine like terms: -7 + 7 = 0
0 + 36k2 = 18 + 7
36k2 = 18 + 7
Combine like terms: 18 + 7 = 25
36k2 = 25
Divide each side by '36'.
k2 = 0.6944444444
Simplifying
k2 = 0.6944444444
Take the square root of each side:
k = {-0.833333333, 0.833333333}
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