How many solutions -x+y= −x+y= \,\,-7 −7 -3x+4y= −3x+4y= \,\,-27 −27

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

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