Question

what is twice a number subtracted from four times a number added to 15

Answer 1

I believe it would be this: 
3 (2×-5)=1+4× 6-15=1+4× 6×=1+4×+15

I hope this answer helped, and my deepest apologies if I have calculated wrongly. Math is tricky! :) 

Answer 2

i think it is 30 i am not sure