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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

7/8=7/8 (as 7 and 8 do not have any common factor) 64/16=16/4 (as 64 and 16 have common factor i.e. 4 and can be divided by it to get the denominator as 4) 36/-12=12/-4=-12/4 (as 36 and 12 have common factor i.e. 3 and can be divided by it to get the denominator as 4)(the minus sign can be given to the numerator from the denominator, if required) -16/17=-16/17 (as -16 and 17 do not have any common factor) 5/-4=5/-4=-5/4 (the minus sign can be given to the numerator from the denominator, if required) 140/28=20/4 (as 140 and 28 have common factor i.e. 7 and can be divided by it to get the denominator as 4)