Question

Calculeaza 4×a-b:3+5×c+d:6 stiind ca:a=(9000-75:5-8905):4;b=76×8×(2987-2986)-575;c=3000-(48×7-85:5)-2669;d=76:4+45×4+9:9-146
va rog ajutatima!

Answer 1

▪Răspuns :

a = ( 9000 - 75 : 5 - 8905 ) : 4
a = ( 9000 - 15 - 8905 ) : 4
a = ( 8985 - 8905 ) : 4
a = 80 : 4
a = 20

b = 76 × 8 × ( 2987 - 2986 ) - 575
b = 76 × 8 × 1 - 575
b = 608 × 1 - 575
b = 608 - 575
b = 33

c = 3000 - ( 48 × 7 - 85 : 5 ) - 2669
c = 3000 - ( 326 - 17 ) - 2669
c = 3000 - 309 - 2669
c = 2691- 2668
c = 23

d = 76 : 4 + 45 × 4 + 9 : 9 - 146
d = 24 + 45 × 4 + 9 : 9 - 146
d = 24 + 180 + 9 : 9 - 146
d = 24 + 180 + 1 - 146
d = 204 + 1 - 146
d = 205 - 146
d = 54

4 × a - b : 3 + 5 × c + d : 6 = 294
= 4 × 20 - 33 : 3 + 5 × 23 + 54 : 6
= 80 - 33 : 3 + 5 × 23 + 54 : 6
= 80 - 11 + 5 × 23 + 54 : 6
= 80 - 11 + 115 + 54 : 6
= 80 - 11 + 115 + 9
= 80 + 115 + 9
= 195 + 9
= 294