Question

aflați numerele x si y dacă sunt direct proporționale cu 5 si, respectiv 6, iar 4x - 3y = 6.

Answer 1

{x, y} dp { 5,6}
x/5=y/6 =k
x=5k
y=6k
4×5k -3×6k = 6
20k -18k =6
2k =6
k=6:2
k= 3
x= 5×3=15
y=6×3 =18

Answer 2

x/5=y/6=k

x=5k

y=6k

4x-3y=6

4*5k-3*6k=6

20k-18k=6

2k=6

k=3

x=5k=5*3=15

y=6k=6*3=18