7+0, 7+7, 20+1, 20+8, ,30+5,39+3,40+9,50+6,59+4, 30+40, 70+7,80+4,90+1,90+8.... и т.д.
1) m × 8 =48512
8m = 48512
m = 48512 ÷ 8
m = 6064
2) 801750 ÷ k =25
25k = 801750
k = 801750 ÷ 25
k = 32070
3) a ÷ 17 = 408
a = 408 × 17
a = 6936
4)9 × b = 36720
b = 36720 ÷ 9
b = 4080
5) x ÷ 208 = 52
x = 208 × 52
x = 10816
6) 77132 ÷ n =22
n = 77132 ÷ 22
n = 3506