3 years ago

What is the sum of 2/7 and 3/9?

Mathematics

1 answer:

In-s [12.5K]3 years ago

5 0

Answer:

39/63

Step-by-step explanation:

18 21 39/63

63 63

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Help plz I'm desperate

lutik1710 [3]

Anna:

1st month = 18 + $\frac{3}{4}$ = 18 $\frac{3}{4}$ inches

2nd month = 18 $\frac{3}{4}$ + $\frac{3}{4}$ = 19 $\frac{1}{2}$

3rd month = 19 $\frac{1}{2}$ + $\frac{3}{4}$ = 20 $\frac{1}{4}$

4th month = 20 $\frac{1}{4}$ + $\frac{3}{4}$ = 21

5th month = 21 + $\frac{3}{4}$ = 21 $\frac{3}{4}$

Grace:

Because Anna is $\frac{9}{4}$ inches shorter than Grace, we can start the count from the third month:

1st month = 20 $\frac{1}{4}$

2nd month = 21

3rd month = 21 $\frac{3}{4}$

4th month = 21 $\frac{3}{4}$ + $\frac{3}{4}$ = 22 $\frac{1}{2}$

5th month = 22 $\frac{1}{2}$ + $\frac{3}{4}$ = 23

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2 years ago

Which expression is equivalent to s+s -4s A- 1-3s b- -4s c- s-3 d- -2s

a_sh-v [17]

Answer:

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Step-by-step explanation:

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What is the sum of 2/7 and 3/9?​

What is the sum of 2/7 and 3/9?