One Step Equations, need help with this one:

x+3=7

Thanks

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

In the diagram, gef and hef are congruent. what is the value of x

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?