Please help

question 1. 1/2 + 2/5
question 2. 5/12 + 7/9

Taking algebra two apex courses and need with these questions

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Ill mark the brainliest if you me with the these three questions 7,8,9