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Andrei1261
a fost răspuns

2×x+3=17; 4×x+7=27; 9+3×x=51; 5×x=75

Răspuns :

Denisee11
a)2×x+3=17
2×x=17-3
2×x=14
x=14:2
x=7
b)4×x+7=27
4×x=27-7
4×x=20
x=20:4
x=5
c)9+3×x=51
3×x=51-9
3×x=42
x=42:3
x=14
d)5×x=75
x=75:5
x=15.

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