Răspuns:
a:64:(4+4)=64:8=8
e:27:3+(4+12×2)=27:3+(4+24)=27:3+28=9+28=37
b:(22+26):2=48:2=24
f:42:7+(84:4+3×9)×3-72:8=42:7+(21+27)×3-72:8=42:7+48×3-72:8=6+114-9=120-9=111
c:150-(25+25)=150-50=100
g:12×9+(25-5×5):10-12×9=12×9+(25-25):10-12×9=12×9+0:10-
12×9=108+0-108=108-108=0
d:(15+25):5-10:5=40:5-10:5=8-2=6
h:(99:9+233):10+10:10:1=(11+233):10+10:10:1=244:10+10:10:1=24,4+10:10:1=2,44:10=0,244
Explicație pas cu pas:
la 2 din astea nu sunt sigură dacă e corect dar ,baftă
