Question

AJUTOR!!! Prima problema de sus!!! DAU COROANA

Answer 1

v-vlad
t-tata
x-cu cati ani in urma
v=12
t=30
acum x ani:
t-x=3*(v-x)
t-x=3v-3x
30-x=12*3-3x
3x-x=36-30
2x=6
x=3

Answer 2

v,t  cu cati ani in urma v=12 t=30   acuma x ani t-x=3*(v-x) t-x=3*(v-3x) 30 -x=12*3-3x 3x-x=36 -30 =6