Question

1media aritmetica a trei nr,naturale x,y,z este 28.determinati suma lor. 2.aflati nr.natural xdaca:2x+x·a+x·b=32si a+b=6

Answer 1

1) (x+y+z):3=28
x+y+z=28·3
x+y+z=84
2)2x+x(a+b)=32
2x+6x=32
8x=32
x=32:8
x=4