Buna! :)
a) 2/7 x 14/10 + 4/9 : 10/9 + 5²/5³=
2/5+4/9 x 9/10+ 1/5=
2/5+2/5+1/5=
5/5=
=1
b) ( 1/2-1/8) x2⁴=
(4/8-1/8)x16=
3/8 x 16=
3x2=
=6
c) 1/201 + 2/201 +...+201/201=
(1+2+3+...+201)/201=
(201x202/2)/201=
201x101/201=
=101
Sper ca te-am ajutat. Coronita? ♡︎
