kassiec1015 kassiec1015
  • 23-04-2021
  • Mathematics
contestada

Hannah buys ⅔ pound of roast beef. She uses ¼ pound to make a sandwich for lunch. How much roast beef does she have left?

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gabiwang05 gabiwang05
  • 23-04-2021

Answer:
5/12

Explanation:
With unlike denominators find the Least Common Denominator (LCD)

LCD = 12
3x4=12

Multiplying numerators and denominators to get the LCD in all fraction denominators
=2×4/3×4 − 1×3/4×3

Then rewriting the equation with the equivalent fractions
=8/12 − 3/12

With like denominators we can operate on just the numerators
=(8−3)/12
=5/12
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