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afla necunoscutele.a×30=1500.2500:a=50.80×b=2400.b÷400=70.c÷80=400.27000÷c=9

Răspuns :

a×30=1500
a=1500:30
a=50

2500:a=50
a=2500:50
a=50

80×b=2400
b=2400:80
b=30

b:400=70
b=70×400
b=28000

c:80=400
c=400:80
c=5

27000:c=9
c=27000:9
c=3000
DeniMiauMiau
1)a×30=1500
a=1500:30
a=50
2)2500:a=50
a=2500:50
a=50
3)80×b=2400
b=2400:80
b=30
4)b:400=70
b=70×400
b=28000
5)c:80=400
c=400×80
c=32000
6)27000:c=9
c=27000:9
c=3000

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