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140:8=17,5
b)60+4=64
10*18:3=180:3=60
c)60+12=72
1120:(2+6)=1120:2=560
140:(7-3)*2=140:4*2=35*2=70
b)10*6+12:3=60+4=64
10*(6+12):3=10*18:3=180:3=60
c)120:2+2*2/3=60+4/3=61 i 1/3
1120:(2+2*3)=1120:8=140
70
b -64
60
c-78
15 jeśli jest 120:(2+2*3)
140 jeśli jest 1120:(2+2*3)