a) a×4=32
a=32:4
a=8
8×a=72
a=72:8
a=9
42:a=7
a=42:7
a=6
b)m:9=7
m=9×7
m=63
54:m=6
m=54:6
m=9
6×m=24
m=24:6
m=3
c)72:x=9
x=72:9
x=8
x:7=6
x=7×6
x=42
x:6=9
x=9×6
x=54
Află factorul necunoscut:
a=32÷4
a=72÷8
42÷a=7
a=42÷7
b) m÷9=7
m=7×9
54÷m=6
m=54÷6
m=24÷6
m=4
c) 72÷x=9
x=72÷9
x÷7=8
x=7×8
x=56
x÷6=9
x=6×9
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