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a fost răspuns

42÷7=2× x ,36÷6=2×x ,21÷3=42÷x 60÷6=70÷x

Răspuns :

CosmoteRo
42:7=2x
6=2x
x=3

36:6=2x
6=2x
x=3

21:3=42:x
7=42:x
x=6

60:6=70:x
10=70:x
x=7
Sanduurzica
42÷7=2×x
 6=2×x
x=6÷2
x=3
v:42÷7=2×3
    6=6
.................
36÷6=2×x
 6=2×x
x=6÷2
x=3
v: 36÷6=2×3
     6=6
.........................
21÷3=42÷x
  7=42÷x
x=42÷7
x=6
v: 21÷3=42÷6
     7=7
...................
60÷6=70÷x
10=70÷x
x=70÷10
x=7
v: 60÷6=70÷7
    10=10

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