mamastarr mamastarr
  • 04-01-2019
  • Mathematics
contestada

explain how you can add on to find the differennce 727-685

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yawshu
yawshu yawshu
  • 04-01-2019

Answer:

You can do something call KCC. It means keep the sign of 727(which is positive) and change the - (Subtraction sign) to + (addition sign) and change again the positive 685 (685) to a negetive 685 (-685) so now the new equation is 727+(-685)=42 and 727-685=42

Step-by-step explanation:


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