Question

Află necunoscutele (atenție la ordinea efectuării operaţiilor!):
194 x 3 + 200-O = 493
40:8 + 124 x 5 + m = 719
(104 x 4 + 83 x 5)-S X 3 = 8 x 100+ 36:9
(321x2 - 115 x 4)+ 42 : v= 180 + 2 x 4
(138 x 5 - 21:7 - 300 x 2) - 9x9-nx 2 = 2
692 + 248 - [800 - ( 123 x 2 +88 x 3)]-bx 8 = 300 x 2 + 2


E URGENT VA ROG!​

Answer 1

Răspuns:

1.582+200-o=493

782-o=493

O=782-493

O=289

2.5+620+m=719

625+m=719

m=719-625

m=94

3.(416-415)-sx3=800+4

1-sx3=804

S-1=804:3

S-1=268

S=268+1

S=269

4.(642-460)+42:v=180+8

182+42:v=188

42:v=188-182

42:v=6

V=42:6

V=7

5.(690-3-150)-81-nx2=2

(687-150)-81-nx2=2

537-81-nx2=2

456-nx2=2

-nx2=2-456

-nx2= - 454

n=-454:-2

n=227

6.692+248-[800-(246+264)]-bx8=600+2

692+248-(800-510)-bx8=602

692+248-290-bx8=602

940-290-bx8=602

650-bx8=602

-bx8=602-650

-bx8=-48

b=-48:-8

b=6