Question

x-2,6=23
2 * x = - 32 ( * e ori )

x : 4 = 3
 Ce medie areAndrei la biologie daca a primit notele 5 5 8 10
  x : 2 = 1/ 3 ( 1/ 3 e fractie )
 solutia ecuatiei : 2 * (4x + 3 )= 2/3 ( 2/3 e fractie si * e ori )

Answer 1

2*x=-32   x=-32:2=-16
x:4=3     x=12
Media=5+5+8+10=28:4=7
x:2=1/3; x=2/3
2*(4x+3)=2/3   4x+3=1/3    4x=1/3-3=-8/3    x=-2/3