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aflati termenii care lipsesc:
a)7/10+x=10/10
3/8+x=5/8
x+7/20=15/20

Răspuns :

Cristinabranzan13
7/10+x=10/10
x=10/10-7/10
x=3/10

3/8+x=5/8
x=5/8-3/8
x=2/8

x+7/20=15/20
x=15/20-7/20
x=8/20

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