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OpenStudy (anonymous):
if i have (7/7x+28)+(1/21x+63) what are th steps to find the LCD?
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OpenStudy (anonymous):
First, see if you can simplify (In this case, 7/7x+27 will simplify to 1/x+4. Next, multiply your denominators together. (x+4)(21x+63), or \[21x^2 + 147x+252\] Then to solve the equation, You would multiply both parts by the LCD, and cancel where necessary, and then add.
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