Question

VA ROG VREAU SO REZOLV IN SEARA ASTA​

Answer 1

19.

a + b + c = 3962

a = 3c

c : b = 2 rest 176 => c = (c - 176)/2

Inlocuim

3c + (c - 176)/2 + c = 3962

Amplificam

6c + c - 176 + 2c = 7924

9c = 8100

c = 900

a = 3c = 3×900 = 2700

b = (900 - 176)/2 = 362

21.

a + b + c = 1143

a : c = 2 rest 105 => a = 2c + 105

b : c = 5, rest 78 => b = 5c + 78

Inlocuim

2c + 105 + 5c + 78 + c = 1143

8c = 960

c = 120

a = 2c + 105 = 2×120 + 105 = 240 + 105 = 345

b = 5c + 78 = 5×120 + 78 = 600 + 78 = 678