Question

Determinati numerele maturale x si y astfel incat (x-3)*(y+2)=12

Answer 1

(x - 3) x( y + 2) = 12
1 x 12 = 12
x - 3 = 1    y + 2 = 12
x = 1 + 3    y = 12 - 2
x = 4         y = 10
( 4 _ 3 ) x ( 10 + 2 ) = 1 x 12 = 12


3 x4 = 12
x - 3 = 3       y + 2 = 4
x = 3 + 3       y = 4 - 2
x = 6             y = 2
( 6 - 3 ) x ( 2 + 2 ) =   3 x 4 = 12

6 x2 = 12
x - 3 = 6        y + 2 = 2
x = 6 + 3        y = 2 - 2
x = 9              y = 0
( 9 - 3 ) x ( 0 + 2 ) = 6 x 2 = 12