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5•x+7=47 Pls este urgent dau 100 de pct

Răspuns :

5*x+7=47
5*x=47-7
5*x=40
x=40:5
x=8
5×x+7=47
5x+7=47
5x=47-7
5x=40
x=40÷5
x=8

5×8+7=40+7
=47