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Răspunsuri la întrebare
3000-(2300-18:y:3)=702
2300-18:y:3=3000-702
2300-18:y:3=2298
8:y:3=2300-2298
18:y:3=2
18:y=2×3
18:y=6
y=18:3
y=6
2000-(1200-20:5:y)=801
2000-1200+4:y=801
800+4:y=801
4:y=801-800
4:y=1
y=4
y+(30+3+9:3)x3.=408
y+(33+3)X3=408
y+36x3=408
y=408-108
y=300
400+(y+4+16:4)x4=592
(y+4+4)x4=592-400
(y+8)x4=192
y+8=192:4
y+8=48
y=48-8
y=40
500 + (50 + y + 25:5) x 5 = 800
(50 + y + 5) x 5 = 800-500
(55 + y ) x 5 = 300
55 + y = 300:5
55 + y = 60
y=60-55
y=5
600 + (60 + 6 + y:6) x 6 = 1 038
(60 + 6 + y:6) x 6 = 1 038-600
(66 + y:6) x 6 = 438
66 + y:6 = 438:6
66 + y:6 = 73
y:6 = 73-66
y:6 = 7
y=7×6
y=42
2+(4+2:y)×2=12
(4+2:y)×2=10
4+2:y=10:2
4+2:y=5
2:y=5-4
2:y= 1
y=2
1+(1+1+1:1)×y=4
1+(3:1)×y=4
1+3×y=4
4×y=4
y=4:4
y=1
y-(20+2+12:2)×2=144
y-(20+2+6)×2=144
y-28×2=144
y-56=144
y=144+56
y=200
300-(y+3+24:3)×3=177
(y+3+24:3)×3=300-177=123
y+3+8=123:3=41
y+11=41
y=41-11
y=30