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4 years ago

What is the answer to the equation 7/9+1/7+3/5

Mathematics

2 answers:

Pavel [41]4 years ago

4 0

Answer:

479/315

Step-by-step explanation:

1.) Add: 7/ 9 + 1 /7 = 7 · 7 /9 · 7 + 1 · 9 /7 · 9 = 49 /63 + 9 /63 = 49 + 9 /63 = 58 /63

The common denominator you can calculate as the least common multiple of the both denominators - LCM(9, 7) = 63. The fraction result cannot be further simplified by cancelling.

In words - seven ninths plus one seventh = fifty-eight sixty-thirds.

2.) Add: the result of step

No. 1 + 3 /5 = 58 /63 + 3 /5 = 58 · 5 /63 · 5 + 3·63 /5·63 = 290 /315 + 189 /315

= 290 + 189 /315 = 479 /315

The common denominator you can calculate as the least common multiple of the both denominators - LCM(63, 5) = 315. The fraction result cannot be further simplified by cancelling.

In words - fifty-eight sixty-thirds plus three fifths = four hundred seventy-nine three-hundred fifteenths.

Eva8 [605]4 years ago

3 0

Answer:

Step-by-step explanation:

1.52063492063

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