Simplify the following:
-4/5 - 7/8
Put -4/5 - 7/8 over the common denominator 40. -4/5 - 7/8 = (8 (-4))/40 + (5 (-7))/40:
(8 (-4))/40 + (5 (-7))/40
8 (-4) = -32:
-32/40 + (5 (-7))/40
5 (-7) = -35:
(-32)/40 + -35/40
-32/40 - 35/40 = (-32 - 35)/40:
(-32 - 35)/40
-32 - 35 = -(32 + 35):
-(32 + 35)/40
Answer: |(-67)/40
