tolong dijawab ya dan cara kerja nya 1 10

1. 40 x 25 = 25 x n
    40 x 25 = 25 x n
    n = 40
2. (35 + 70) + 48 = 35 + (n + 48)
    35 + 70 + 48 = 35 + n + 48
    n = 70
3. 15 x (20 + 45) = (15 x n) + (15 x 45)
     (15 x 20) + (15 x 45)  = (15x n) + (15 x 45)
     n = 20
4. n + 75 = 75 + 60
    75 + n = 75 + 60
    n = 60
5. (n x 24) x 30 = 50 x (24 x 30)
    n x 24 x 30 = 50 x 24 x 30
    n = 50
6. 18 x (60 - 28) = (n x 60) - (n x 28)
    (18 x 60) - (18 x 28) = (n x 60) - (n x 28)
    n = 18
7. 80 x 55 = n x 80
    55 x 80 = n x 80
    n = 55
8. 40 + (70 + 90) = (40 + n) + 90
    40 + 70 + 90 = 40 + n + 90
    n = 70
9. (50 + 35) x n = (50 x 38) + (35 x 38)
    (50 + 35) x n = (50 + 35) x 38
    n = 38
10. n + 85 = 85 + 58
      85 + n = 85 + 58
      n = 58