No to your first question.
-6-(-2)= -6 + 2 = __
No to your second question, also.
The common denominator to use is 14.
-5/14 + 9/7 = -5/14 + 18/14 = (18-5)/14
= 13/14
Subtract
-6-(-2)=8 is this right I get confused.
add. -5/14+9/7=-14/21
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