Yhenzbanoid
Answered

find the sum express to the lowest term
1.) 1/10+3/10
2)4/9+5/9
3)11/15+1/3
4)7/18+1/3
5)9 1/2+1 1/9
6)13 2/5+ 1/5
7)3 4/5+1 20/20

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Sagot :

NCTworldid

Answer:

1. 1/10 + 3/10

4/10 ÷ 2/2

= 2/5

2. 4/9 + 5/9

9/9 ÷ 9/9

= 1

3. 11/15 + 1/3

11/15 + 1×5/3×5

11/15 + 5/15

= 16/15 or 1 1/15

4. 7/18 + 1/3

7×3/18×3 + 1×18/3×18

21/54 + 18/54

= 39/54

5. 9 1/2 + 1 1/9

9×2+1/2 + 1×9+1/9

19/2 + 10/9

19×9/2×9 + 10×2/9×2

171/18 + 20/18

= 191/18 or 10 11/18

6. 13 2/5 + 1/5

13×5+2/5 + 1/5

67/5 + 1/5

= 67/5 or 13 2/5

7. 3 4/5 + 1 20/20

3×5+4/5 + 1×20+20/20

19/5 + 40/20

19×4/5×4 + 40/20

76/20 + 40/20

116/20 ÷ 4/4

= 29/5 or 5 4/5