Explicație pas cu pas:
a) (317-29,6):11=287,4×1/11=1437/5×1/11=1437/55
c) (361:19+512:32):7=(19+16):7=35÷7=5
d)(419+288:24+1)÷18=(419+12+1):18=432:18=24
e) (43x11-19,21)÷37=23,9×1/37=239/10×1/37=239/370
g) [403:13-(6309:9+7,4):27]:2-1=(31-(701+7,4)×1/27)×1/2-1=
=(31-708,4×1/27)×1/2-1=(31-3542/5×1/27)×1/2-1 =
=(31-3542/135)×1/2-1=643/135×1/2-1=643/270-1=373/270