Question

calculați:
a) 2/7x14/10+4/9:10/9+5²/5³
b)(1/2-1/8)x 2⁴
c) 1/201+2/201+...+201/201


(bara reprezintă" pe sau supra)

Va rogggggggg​

Answer 1

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? ♡︎