Answer:
-C
Step-by-step explanation:
3(C - 2d) - 2(2C - 3d).
Distribute
3C - 6d - 4C +6d
Combine like terms
3C -4C -6d +6d
-C
Answer:
Jack can paint a certain room in 3 hours, lisa is 4 hours, and sue in 2 hours. ... Jack's rate is one-third of a job per hour, Lisa's is one-fourth of a job per hour and Sue's is one-half of a job per hour. If they all work together for t hours, one whole job is completed. t/3 + t/4 + t/2 = 1 .
Step-by-step explanation:
