<span>(1/2) [SIN(X-Y)-SIN(X+Y)]= COS(X)SIN(Y)</span>
Answer:

Step-by-step explanation:
we know that
The expression Subtract
from
is equivalent to the algebraic equation


Group terms that contain the same variable
Combine like terms



Let's call dimes x and the quarters x+3 since we have 3 more of them.
x+x+3=45
2x=42
x=21
we have 21 dimes and 23 quarters
21*0.10=2.1
23*0,25=5.98
if we add those together it equals 8.08
Answer:
m-5=15!
Step-by-step explanation: