Question

Solutia ecuatiei $\frac{3}{2} (7x - \frac{2}{5} ) + \frac{1}{2} = 2$ este numarul rational....

Media aritmetica a numerelor x, x-1, x-2 si x-3 este 4,75. Atunci cel mai mic numar este numarul rational egal cu.....

Answer 1

3(7x-2/5)+1=4
3(35x-2)/5=3
3(35x-2)=15
35x-2=5
35x=3
x=3/35 care este nr rational
 

(x+x-1+x-2+x-3):4=4,75
4x-6=19
4x=13
x=13/4
cel mai mic nr rational=13/4-3=1/4