What is the answer? Someone, please tell me?

Simplify the expression 10/11(22z) + (a+5) -1

I'm confused on this could anyone me and show me what i need to do to solve it.

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t