Please explain how to solve this equation! 15/a+x=b/a

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

17 in long 1.3 ft wide and 8in high what is the volume

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%