Question

a +b = 2003 , a= 27+b x 3 , a= ? b=?

Answer 1

27+bx3+b=2003
27+ 4b=2003
4b=2003-27
4b= 1976
b=1976:4
b=494
a= 27+494x3=1509

494+1509=2003

Answer 2

a + b = 2003
a = 27 + 3×b
inlocuim in prima ecuatie pe a
27 + 3×b + b = 2 003
4×b = 2 003 -27
4×b = 1 976 | :4
b = 494
a = 2 003 - 494
a = 1 509

Verificare:
1 509 + 494 = 2 003

a = 1 509
b = 494