Iam a two-digit number i am one less than a multiple of 10 if you add 30 to me you get another prime number who am i

What is the value of x? 3x + (6x - 6) = 4(2x-2)

Chip worked at the animal shelter for 6 hours each week for several weeks. he worked for a total of 42 hours. which of the following can be used to find the number of weeks chip worked at the animal shelter?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)