Answer:
1/3
Step-by-step explanation:
2/3 plus -1/3 is the same as subtracting 1/3 from 2/3.
5/9
20/36=5/9
C. t=$8, s=$12
3($8)+4($12)=$72
4($8)+1($12)=$44
-5.3.
-8.6 + 2.3 + 1
= -6.3 + 1
= -5.3.