Question

responda
a)[(21:7+2:1)+4]+6.(14:2+3-5)

b)(100-7 .4):(40-8:2)

c)120:{[(3.5)-4+(8.3+5)]}

d) (20+21:3). (36:6-4)

e) {[(40-30):2+(8.5):4]+15:3}

Answer 1

a) [3+2+4]+6×8+3-5
[3+2+4]+48+5-3
1+48+2
51
b) (100-28):(40-4)
72 : 36
2
c) 120:{[15-4+(24+5)]}
120:{[15-4+29]}
120:{[11+29]}
120:40
3
d) (20+7) . (6-4)
13 . 2
26
e) {[10:2+40:4]+5}
{[5+10]+5}
{15+5}
20