Question

1. 60% din x = 120
X=
2. Solutia ecuatiei :2/3x -1=5/6
X=
3. Calculati:
[8-4,7:(5-0,8: 2intregi si 2/3)-4/5*1,25]:0,1=

Answer 1

1) 60% * x =120
60/100*x=120
60*x=120x100
x=12000:60
x=200-->60% din 200=120

2)2/3x-1=5/6
x=2/3-1+5/6
x=0(6)+1+0,8(3)
x=1+1+0,8(3)
x=2+0,8(3)
x=4.4
3) Nu am inteles
Mie mi-a dat 70 intr-un final!