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cum se rezolva 7 (x+1/5)=7/4

Răspuns :

7(x+1/5)=7/4
7x+7×1/5=7/4
7x+7/5=7/4 |-7/5
7x=7/4^5-7/5^4
7x=7/20-7/20
7x=1/20 |:7
x=1/20:7
x=7/20

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