Question

Vă rog ajutați-mă! Este urgent!

Answer 1

a)x/6=2/3, 3x=12, x=4. ver;4/6=2/3, aplifici4/6=2/3, 2/3=2/3...
b)12/x=4/5, x≠0, 60=4x, 4x=60, x=15, x≠0,  x=15
      verificarea;12/15=4/5,apli;12/15=4/5, 4/5=4/5.
c) 10/5=x/12, 2=x/12, 24=x, x=24. ver; 10/5=24/12.aplif;10/5=24/12, 2=2...
d) 6/7=12/x, x≠0, 6x=84, x=14, x≠0, x=14.
      ver; 6/7=12/14, aplifici; 12/14=6/7, 6/7=6/7.
e) x/5=1/1, x/5=1, x=5, ver; apl;5/5=1, 1/1=1, 1/1.
f)x/4=2 1/2, x/4=5/2, 2x=20, x=10, ver;10/4=5/2, apl;10/4=5/2, 5/2=5/2.
g) 1/x=0.2, x≠0, 1=0.2x, 0.2x=1, x=5, x≠0, x=5.
     ver;1/5=0.2, apl;1/5=0.2, 0.2=0.2
h) x/0.6=1, x/6/10=1, /x×10/ 6=1, /x×5/6=1, 5x/3=1, 5x=3,x=3/5, x=0.6.
    ver;0.6/0.6=1, 1=1.
i) /1/2+2/3/ x=1/6, /3+4/6/x=1/6, 7/6/x=1/6, 7/6x=1/6, x≠0, 42=6x, 6x=42, 
    x=7, x≠0, x=7, ver; /1/2+2/3/7=1/6, 1/6=1/6.
/bara inseamna supra-/ sper ca team ajutat