1) (-7)-5-(-3), (-7)-5+3, (-12)+3, = 9
2)8-(-1)+(-2), 9 - 2, = 7
3) LCD of 3, 8, 4= 24, everything is multiplied by 24. 5--11-1=15
4) LCD of 5, 2, 6= 30, everything is multiplied by 30. 7+3+-7=3
5) (7)(2)(-9), (14)(-9), -126
6) (6)(-5)(4), (24)(-5), -120
