13/6+6/7÷2/7*5 ½ please help me
Answers
Answer:
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Answer:
Add: 1/
2
+ 1/
5
= 1 · 5/
2 · 5
+ 1 · 2/
5 · 2
= 5/
10
+ 2/
10
= 5 + 2/
10
= 7/
10
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(2, 5) = 10. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 2 × 5 = 10. In the following intermediate step, it cannot further simplify the fraction result by canceling.
In other words - one half plus one fifth = seven tenths.
Add: the result of step No. 1 + 4/
5
= 7/
10
+ 4/
5
= 7/
10
+ 4 · 2/
5 · 2
= 7/
10
+ 8/
10
= 7 + 8/
10
= 15/
10
= 5 · 3/
5 · 2
= 3/
2
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(10, 5) = 10. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 10 × 5 = 50. In the following intermediate step, cancel by a common factor of 5 gives 3/
2
.
In other words - seven tenths plus four fifths = three halfs.