Question

Afla suma numerelor A si B stiind ca
a-b=375 a /b=4 rest 3

Answer 1

Algebra:
a+b=?
a-b=375
a:b=4 rest 3
a=4b+3
4b+3-b=375
3b=375-3
3b=372
b=372:3
b=124
a=124x4+3
a=499
a+b=499+124=623
Metoda grafica:
a+b=?
a-b=375
a:b=4 rest 3
a=4b+3
a I_I_I_I_I_3_I
b I_I........
       375
375-3=372(3b)
372:3=124(b)
124x4+3=499(a)
124+499=623(a+b)

Answer 2

a-b=375;
⇒a=4b+3;
⇒4b+3-b=375
⇒3b=372⇒b=124;
⇒a=4·124+3
⇒a=496+3⇒a=499;
⇒a+b=499+124=623;