Question

-8-(-9)=? -7-(-3)=? -5-(-5)=? -4-(-69)=?

Answer 1

-8-(-9)=-8+9=9-8=1 -7-(-3)=-7+3=3-7=-4 -5-(-5)=-5+5=0 -4-(-69)=-4+69=69-4=65