First determine by trial that 2, 3, 6, 13, 26, and 36 are the only integral factors of 78 and that 2, 3, 4, 6, 7, 9, 14, 21, 42, and 63 are the only integral factors of 126. The greatest common factor is 6; therefore, divide both numerator and denominator by 6 to result in -13/21.
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"Percent" means "out of" or "over" 100, so put it over "100" and simplify: 78% = 78/100 = 39/50
To simplify 126 over 15, we first find the greatest common divisor (GCD) of 126 and 15, which is 3. Dividing both the numerator and denominator by 3 gives us 42 over 5. Therefore, 126 over 15 simplified is 42 over 5.
It is: 126-48 = 78
Assuming you mean 1167/126... It would simplify as 37/42 Yes 117/126 is 29/42 (divide by 3 on top and bottom)