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Simplify the expression 3/15-2/25=

User Gpr
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2 Answers

2 votes
Since the 2 fract. have diff. denoms., we must find the LCD.

Note that factors of 15 are 3 and 5, and that
factors of 25 are 5 and 5. The LCD thus includes 5, 3 and 5, and is 75. Notice that both 15 and 25 divide evenly into 75.

Thus we have
3*3
15/75 - 6/75, or -9/75. This must be reduced; the answer is - --------
3*25

and this reduces further to 3/25 (answer).
User Kheyse
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8.6k points
3 votes
45 3
__ / 15 = ___

75 5
User Rob Hogan
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