b)214+6x48-513:9-28x4+175:7:5=
214+288-57-112+25:5=
333+5=338
c)1000-[625:5+(384:4:2+138x4)]:5=
1000-[125+(96:2+552)]:5=
1000-[125+(48+552)]:5=
1000-(125+600):5=
1000-725:5=
1000-145=855
d)48x10:6+[142x6-(740:2:2+96x4)+637]:10=
480:6+[852-(370:2+384)+637]:10=
80+[852-(185+384)+637]:10=
80+(852-569+637):10=
80+920:10=
80+92=172
e)400x100-[(78x54-53x4):100x(159x6+138:3)]=
40000-[(4212-212):100x(954+46)]=
40000-(40000:100x100)=
40000-(400x100)=
40000-40000=0
h)39x[45x8:5:9x(1348-1299):7]-2184=
39x(360:5:9x49:7)-2184=
39x(8x7)-2184=
39x56-2184=
2184-2184=0
i)219x36-(132:6+38x7)x24+[(105+80):5+8]:5=
7884-(22+266)+(185:5+8):5=
7884-288+(37+8):5=
7596+45:5=
7596+9=7605
î)9000-{146+[200:10x9-(348x7-49x48)]}=
9000-{146+[20x9-(2436-2352)]}=
9000-[146+(180-84)]=
9000-(146+96)=
9000-242=8758
j)[900-(30x10+615:3-45)]+a=1000
[900-(300+205-45)]+a=1000
(900-540)+a=1000
360+a=1000
a=1000-360
a=640