Question

Дз решите пж 1/5+8/25+7/25 3/49+5/7+4/49 1/7+2/21+3/7 7/10+2/15+1+/30 1/15+2/45+7/15 1/12+1/18+1/14

Answer 1

1/5+8/25+7/25=5/25+8/25+7/25=20/25=4/5.
3/49+5/7+4/49=3/49+35/7+4/49=42/49=6/7.
1/7+2/21+3/7=3/21+2/21+9/21=14/21=2/3.
7/10+2/15+1/30=21/30+4/30+1/30=26/30=13/15.
1/15+2/45+7/15=3/45+2/45+21/45=26/45.
1/12+1/18+1/14=3/36+2/36+3/36=8/36.

Answer 2

Calculation of the Sum of Fractions

To solve the given expression, let's add up all the fractions:

1/5 + 8/25 + 7/25 + 3/49 + 5/7 + 4/49 + 1/7 + 2/21 + 3/7 + 7/10 + 2/15 + 1/30 + 1/15 + 2/45 + 7/15 + 1/12 + 1/18 + 1/14

To add fractions, we need to find a common denominator. In this case, the least common denominator (LCD) is 350. We'll convert all the fractions to have a denominator of 350 and then add them together.

Converting each fraction to have a denominator of 350:

1/5 = 70/350 8/25 = 112/350 7/25 = 98/350 3/49 = 18/350 5/7 = 250/350 4/49 = 32/350 1/7 = 50/350 2/21 = 20/350 3/7 = 150/350 7/10 = 245/350 2/15 = 28/350 1/30 = 10/350 1/15 = 20/350 2/45 = 10/350 7/15 = 98/350 1/12 = 29/350 1/18 = 19/350 1/14 = 25/350

Now, let's add up all the fractions:

70/350 + 112/350 + 98/350 + 18/350 + 250/350 + 32/350 + 50/350 + 20/350 + 150/350 + 245/350 + 28/350 + 10/350 + 20/350 + 10/350 + 98/350 + 29/350 + 19/350 + 25/350

Adding the numerators:

(70 + 112 + 98 + 18 + 250 + 32 + 50 + 20 + 150 + 245 + 28 + 10 + 20 + 10 + 98 + 29 + 19 + 25)/350

Calculating the numerator:

(1706)/350

Simplifying the fraction:

1706/350 = 853/175

Therefore, the sum of the given fractions is 853/175.