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3 years ago

Simplify a)3/7×28/15÷14/5 b)7/8+1/16-1/12

Mathematics

1 answer:

netineya [11]3 years ago

5 0

Answer:

a)2/7

b)41/48

Step-by-step explanation:

-Question A-

1) Rephrase the problem to look like this:

3/7*28/15*5/14 <-- when dividing fractions you actually multiply by the reciprocal (opposite)

2) Multiply across the above phrase:

420/1470

3) Simplify your fraction:

2/7

There is nothing else to be done with 2/7 and thus it is your final answer.

-Question B-

1) Get the denominator of all 3 fractions to the same Least Common Denominator (48):

42/48 + 3/48 - 4/48

2) Do the arithmetic in the phrase above:

41/48

41/48 cannot be simplified and thus is your final answer

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Rama09 [41]

Answer: $(-\infty, -4]$

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Work Shown:

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