Question

Determinați valoarea fiecărei litere știind ca:
a+b+c=1171
b+x=549
a+x =401
c+x=680

Answer 1

(a+x)+(b+x)+(c+x)=
459+401+680=1630
Dar (a+x)+(b+x)+(c+x)=
a+b+c+3x=
1171+3x
=>1630=1171+3x
3x=459
x=153
a=549-153=396
b=401-153=248
c=680-153=527

Answer 2

a+x+b+x+c+x=549+401+680
a+b+c+3x=1630
ex spune ca a+b+c=1171,deci inlocuim:
1171+3x=1630
3x=459
x=459÷3
x=153
=>b+x=549=>b+153=549
=>b=549-153=>b=393
=>a+x=401=>a+153=401
=>a=401-153=>a=248
=>c+x=680=>c+153=680
=>c=680-153=>c=527