Question

a + b = 192
a : b = 2 rest 12
a = ? ; b = ?

Answer 1

Metoga figurativa:
a |---|---|+12|
b |---| } 192
192-12=180 (valoarea celor trei segmente )
1+2=3 ( segmente)
180:3=60 (b )
60×2+12=120+12=132 (a)

Answer 2

a + b = 192 
a:b = 2 r 12 => a = 2b + 12 
Se inlocuieste a in suma : 
a+ b = 192 
2b + 12 + b = 192 
3b + 12 = 192/-12 
3b = 180 
b = 180 : 3
b = 60 
a = 2b + 12 = 120 + 12 = 132 
Verificare : 132 + 60 = 192 ( Adevarat ).