One point Five ... OR One and a Half
Fifteen
It's written as.. fifteen
15 = fifteen
fifteen minus b
fifteen million
Fifteen degrees.
" fifteen minus 'bee' "
You already have in the question.
15
15 million, seven hundreds and sixty-three thousand, one hundred an forty-five
Oh, dude, it's like super simple. So, you could write 15-b as 15 minus b or as b subtracted from 15. It's like basic algebra, you know?
There is more than 15 instruments techniques. Some of the techniques would be blow in, blow out, spit, line up and have fingers in place.