1) Five times the difference of a number and two is seven more than that number
5(N-2) = N+7
You solve!
2) Twice a number decreased by four is greater than ten, what numbers satisfy this condition?
2N-4 > 10
2N > 16
N > 8
All numbers greater than 8 satisfy this condition.
3) Twice a number decreased by two is equivalent to than number increased by five.
2N-2 = N+5
You solve.
Edwin