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Come on, come on, the math expert came in. Please hand in your homework tomorrow.
-287/8÷7 = -4 1/8

(3/4- 1/2- 1/3)×(-60)=(- 1/ 12)×(-60)=5

(-5)÷(- 15)÷(-3)= 1/5÷(-3)=- 1/ 15

4/5×(-5/ 13)-3/5÷(- 13/5)

= -4/ 13+3/ 13

= - 1/ 13