How do i show my child how to do division and get the remainder 891÷56

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?