Question

afla numerele necunoscute .


#1 a+124x84=230x62

#2 39x280-b=20x80

#3 c-320x60=425x40

#4 57x620-d=40x350 Va rog sa ma ajutati si ma si abonez

Answer 1

1.

a+124x84=230x62

230x62=14.260

124x84=10.416

a+10.416=14.260

a=14.260-10.416

a=3.844

2.

39x280-b=20x80

39x280=10.920

20x80=1.600

10.920-b=1.600

b=10.920-1.600

b=9.320

3.

c-320x60=425x40

425x40=17.000

320x60=19.200

c-19.200=17.000

c=17.000+19.200

c=36.200

4.

57x620-d=40x350

57x620=35.340

40x350=14.000

35.340-d=14.000

d=35.340-14.000

d=21.340