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a+b+c=36 c=b×2 a=b+c

Răspuns :

A+B+C = 36
B+C+B+B*2 = 36
B+B*2+B+B*2 = 36
4*B+2B= 36 
6B = 36 => B = 6

C = 12
A = 12+6 = 18
Didi12342
a + b + c = 36
a = b + c
b + c + b + c = 36
2b + 2c = 36
2(b+c) = 36
b+c = 36 : 2 = 18
a = 18
c = 2×b
b + 2×b = 36 - 18 = 18
3×b = 18
b = 18:3
b = 6
c = 2 × 6 = 12

a = 18
b = 6
c = 12

verificare:
18 + 6 + 12 = 36