Question

ajutorrrrrr repede va rog

Answer 1

a) 13/9 + 40/18= 26/18 + 40/18= 56/18= 28/9
b) 21/5 - 2/10= 21/5 - 1/5= 20/5= 4
c)33/16 - 5*8 / 5*16 -9/16= 33/16- 1/2  - 9/16= 33/16 - 8/16 - 9/16= 16/16= 1
d) 1/6 + 1/2 + 1/3= 1/6 + 3/6 + 2/6= 6/6 = 1
e) 1/3 + 2/3 = 3/3 = 1
f) 99/100 * 10/11 + 17/40 * 4/17= 9/10 + 1/10= 10/10= 1
g) 5/18 + 14/9 * 3/7 + 1/2 * 1/9= 5/18 + 2/3 + 1/18= 5/18 + 12/18 + 1/18 + 18/18= 1
h) x/x+1 + x/x(x+1)= x²/x(x+1) + x/x(x+1)= x²+x/x(x+1)= x(x+1)/x(x+1)
i) 1/2a+1 * 2(2a+1)/3= 2/3

Nu am mai scris si ecuatia initiala. Am trecut direct la rezolvari.