Question

b+c+v+m=7990. b=m+85. c=b*2. v=b+ c+m. cat e b. m c. v. *=ori

Answer 1

b+c+v+m = 7 990
v = b+c+m
2×(b+c+m )= 7 990
b+c+m = 7 990 : 2 = 3 995
c = 2×b
b = m+85 => m= b-85
inlocuim in a 4-a ecuatie in functie de b
b + 2×b + b - 85 = 3 995
4×b = 3 995+85
4×b = 4 080
b = 4 080 : 4
b = 1 020
c = 2×1 020 = 2 040
m = 1 020 -85 = 935
v = 1 020 + 2 040 + 935 = 3 995

Verificare:
3 995 + 3 995 = 7 990

b = 1 020
c = 2 040
m = 935
v = 3 995