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3 years ago

How to subtract fractions with unlike denominators

Mathematics

2 answers:

Maurinko [17]3 years ago

7 0

Answer:Make the denominators the same

Step-by-step explanation:

find the least common denominator

As in find there least common multiple

Then multiply both numerators and denominators to find the common multipl

Example:

2/8 multiples: 8,16,24

5/6 multiples:6,12,18,24

Least common multiple is 24

So 8*3=24

2*3=6

So 2/8=6/24

6*4= 24

5*4=20

So 5/6=20/24

Then you subtract 20/24 by 6/24

Then your done:)

Hoped this helped:)

Lynna [10]3 years ago

4 0

Make them the same i think

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3 years ago

A boat traveled 120 miles downstream and back. The trip down stream took four hours. The trip back took 12 hours. Find the speed

Alexxandr [17]

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Downstream: $(s - c)(12 h.) = 120 mi.$

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$s + c = 30 mph$
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