Question

Afla numerele necunoscute.

a. 45: x×100=900;
25×4: x=20;

b. 824-240: x=800;
245+50×x=745;

c. x: 9×8=808;
x×6: 9=32.

Ajutor!!!!!!
DAU COROANA!!!!!!!!!

Answer 1

45: x=9
x=45: 9=5
100: x=20
x=100: 20=5
240: x=24
x=240: 24
x=10
50*x=500
x=500: 50
x=10
x: 9=101
x=101*9=909
x*6=288
x=288: 6=48

Answer 2

a.
45 : x×100=900
45 : x =900 : 100
45 : x =9
x = 45 : 9
x=5

25×4: x=20
100 : x =20
x = 100 :20
x= 5

b.
 824-240: x=800
 240 :x = 824 - 800
 240 : x = 24
  x = 240 : 24
  x=10

245+50×x=745
50 × x = 745 - 245
50 × x = 500
x = 500 : 50 
x = 10

c.
x: 9×8=808
x : 9 = 808 : 8
x = 101 x 9
x = 909

x×6: 9=32
x =32 x 9 : 6
x = 288 : 6
x = 48