10 ÷ (x - 1) = 5
10 ÷ 5 = x - 1
2 = x - 1
2 + 1 = x
x = 3
15 ÷ (x + 1) - 1 = 2
15 ÷ (x + 1) = 2 + 1
15 ÷ (x + 1) = 3
15 ÷ 3 = x + 1
5 = x + 1
5 - 1 = x
x = 4
10 - 16 ÷ x = 6
-16 ÷ x = 6 - 10
-16 ÷ x = -4
-16 ÷ (-4) = x
10 ÷ (x - 1) = 5
10 ÷ 5 = x - 1
2 = x - 1
2 + 1 = x
x = 3
15 ÷ (x + 1) - 1 = 2
15 ÷ (x + 1) = 2 + 1
15 ÷ (x + 1) = 3
15 ÷ 3 = x + 1
5 = x + 1
5 - 1 = x
x = 4
10 - 16 ÷ x = 6
-16 ÷ x = 6 - 10
-16 ÷ x = -4
-16 ÷ (-4) = x
x = 4