6n + 15 = -42. If you wish to go further and find n, then subtract 15 from both sides, obtaining 6n = -57, so that n = -57/6.
Answer:
6x-18
Step-by-step explanation:
First we multiply everything in the parentheses by 3
3×2x=6x
3×(-6)=-18
And now we put it together-
6x-18
in 12 key 5 black keys are appearing so consider x key will appear in 120 keys
120/x = 12/5
solving further,
x= 50
Answer - If the pattern shown continues, 50 black keys appear on a pipe organ with a total of 120 keys!
Answer:
59070
Step-by-step explanation:
