Question

a:b=4r4n a-b=5965 c:b=2r5 a? b? c?

Answer 1

a:b=4 rest 4

a=4b+4

a-b=5965

4b+4-b=5965

3b+4=5965

3b=5965-4

3b=5961

b=5961:3

b=1987

a=4×1987+4

a=7948+4

a=7952

c:1987= 2 rest 5

c=2×1987+5

c=3974+5

c=3979

Answer 2

Răspuns

Explicație pas cu pas:

a : b = 4 rest 4

a = 4 × b + 4

____________

a - b = 5 965

4 × b + 4 - b = 5 965

3 × b = 5 965 - 4

b = 5 961 : 3           ⇒   b = 1 987

a = 1 987 + 5 965  ⇒    a = 7 952

__________________________

c : b = 2 rest 5

c : 1 987 = 2 rest 5

c = 2 × 1987 + 5

c = 3 974 + 5

c = 3 979