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

140 : n = 5n = 140 ^ 5n = 28----------------------40 - n = k40 - 28 = k k = 12--------k + 88 = m12 + 88 = mm = 100------------------ (m - n ) : x = k(100 - 28) : x = 1272 : x = 12x = 72 : 12x = 6

140:n=5n*5=140n=140:5n=2840-n=k40-28=12k+88=m12+88=100(m-n):x=k(m-n):k=x(100-28):12=x72:12=6