Question

calculeaza nr necunoscute . a)a : 3 = 12 rest 2 b)64 : b=5 rest 4 c)91 :c =9 rest 2

Answer 1

a:3=12 rest 2

a=12*3+2

a=36+2

a=38

64:b=5 rest 4

b=(64-4):5

b=60:5

b=12

91:c=9 rest 2

ma mai gandesc

Answer 2

a) a:3=12 r 2
a=12:3+2
a=4+2
a=6
b)64:b=5 r 4
-------------------
c) 91:c=9 r 2
c: 91:9+2
c= 10,1(1)+2
c= 101-1=100 (simplificam cu 100)= 1 2
------ ------ --+--=11/1=11
900 900 9 1