(m-n): x=k, где140: n=5, 40-n=k и к+88=m

140 : n = 5
n = 140 ^ 5
n = 28

40 - n = k
40 - 28 = k
 k = 12

k + 88 = m
12 + 88 = m
m = 100

(m - n ) : x = k
(100 - 28) : x = 12
72 : x = 12
x = 72 : 12
x = 6

140:n=5
n*5=140
n=140:5
n=28
40-n=k
40-28=12
k+88=m
12+88=100
(m-n):x=k
(m-n):k=x
(100-28):12=x
72:12=6