Răspunsuri

2014-01-25T13:37:00+02:00
A) (5+2x)4=24
5*4+2x*4=24
20+8x=24
8x=24-20
8x=4
x=4/8
x=1/2

b) 6(1+4x)=12
6*1+4x*6=12
6+24x=12
24x=12-6
24x=6
x=6/24
x=1/4
2014-01-25T13:38:55+02:00