X≤-19
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(1/10)m = (1/11)m +1/1100
(1/10 -1/11)m = 1/1100
(1/110)m = 1/1100
m = (1/1100)/(1/110) = 110/1100
m = 1/10
10y+28 is equivalent to 5(2y+8)-12
The two partial products would be 990 *30 and 990 *7
You can also break it up into 900*37 and 90*37
Could you maybe add more info? like a story or something