Question

5. Dovedește că ai înțeles lecția și calculează:
a) (317-29.6):11=
b) [(318:6-13.4).36+348:12):5=
c) (361:19+512:32): 7=
d) (419+288:24 +1):18=
e) (43.11-19.21):37 =
f) (408:17.2-319:29) 504:36 =
g) (403:13-(6309:9+7.4):27]:2-1=​

Answer 1

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