Question

Afla nr n..........​

Answer 1

Răspuns:

vrei toata solutia sau doar rasp?

400+480:4-(680:x+4(20+12+18))=286

400+120-(680/x+4 x 50)=286

400+120-(680/x + 200)=286

400+120-680/x)- 200=280

320- 680/x=286

-680/x=-34

34 x=680

x=20

b. 30+5(32:8+5(40+x+(160:4-6x6)))=1850

30+5(4+5(40+x+(40-36)))=1850

30+5(4+5(40+4x))=1850

30+5(4+200+20x)=1850

30+5(204+20x)=1850

30+1020+100x=1850

1050+100x=1850

x=8

c. 324+3(386+(48+2(5x-80)))=1866

324+3(386+(48+10x-160))=1866

324+3(386+(-112+10x))=1866

324+3(386-112+10x)=1866

324+3(274+10x)=1866

324+822+30x=1866

30x=720

x=24