Question

ajutor dau ce vreti voiiiii 17,18

Answer 1

La exercitiul 17 rezultatul este 115.
Iar la exercitiul 18 e 8,150.

P.S:Nu stiu daca am copiat Bine exercitiile.

Answer 2

17)
{[(7x3-5)+2x6]:4+5}x10-[(4+9)x5-60]=
{[(21-5)+12]:4+5}x10-(13x5-60)=
[(16+12):4+5]x10-(65-60)=
(28:4+5)x10-5=
(7+5)x10-5
35x10-5
350-5=345

18)
30+5x{32:8+5x[40+8x(200:5-72:2)]}=
30+5x{4+5x[40+8x(40-36)]}=
30+5x[4+5x(40+8x4)]=
30+5x[4+5x(40+32)]=
30+5x(4+5x72)=
30+5x(4+360)=
30+5x364=
30+1820=
1850