Question

afla nr necunoscute: a×30=1500; 2500:a=50; 80×b=2400; b:400=70; c:80=400

Answer 1

a×30=1500
30a=1500
a=1500:30
a=50

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

80×b=2400
80b=2400
b=2400:80
b=30

b:400=70
b=70×400
b=28000

c:80=400
c=400×80
c=32000

Answer 2

a×30=1500
a=1500:30
a=50
50×30=1500

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

80×b=2400
b=2400:80
b=30
80×30=2400

b:400=70
b=400×70
b=28000
28000:400=70

c:80=400
c=400×80
c=32000
32000:80=400 sper că te-am ajutat ♥