Remains true. But this does not apply to square roots.
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9x2 = 81 x2 = 9 <-- Divide both sides by nine x = 3 <-- Square root both sides All in all this is NOT a difficult equation.
You multiply both sides of the equation by the denominator.
7Y = 33-4Y ( add 4Y to both sides of equation ) 11Y = 33 ( divide both sides of equation by 11 ) Y = 3
92 = 81122 = 14481 + b2 = 144(take 81 from both sides)b2 = 63b = 7.937253933
You can take the logarithm on both sides of an equation. The real trick is to figure out when this will help you to solve the equation, and when not.