Question

Efectuati
a) [360*9:(81:9+117:13)-6*(13-35*2*7:49)+4]:2+1

b) [(28+12*3):16+4*5]:12+(975:25-315:35):6

c) 3*{29-3*[15-(54:6+1)]}:(12-5)-6

d) {5+[11*4-(36:6+9*3)]:11}:(7*4-11*2)

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Answer 1

a) [360*9:(81:9+117:13)-6*(13-35*2*7:49)+4]:2+1=
= [3240:(9+9)-6*(13-490:49)+4]:2+1= [3240:18-6*(13-10)+4]:2+1=
=(180-6*3+4):2+1=(180-18+4):2+1 =166:2+1=83+1=84

b) [(28+12*3):16+4*5]:12+(975:25-315:35):6=
=[(28+36):16+20]:12+(39-9):6=[(64:16+20) : 12+9:6= (4+20):12+9:6=
=2+9:6=2+1,5=3,5

c) 3*{29-3*[15-(54:6+1)]}:(12-5)-6=3*{29-3*[15-(9+1)]}:7-6=3*[29-3*(15-10)]:7-6=3*(29-3*5):7-6=3*(29-15):7-6=3*14:7-6=3*2-6=12-6=6

d) {5+[11*4-(36:6+9*3)]:11}:(7*4-11*2)={5+[11*4-(6+27)]:11}:(28-22)=
=[5+(44- 33):11]:6=(5+11:11):6= (5+1):6=6:6=1