Twice the difference of 5 and n.
Answer:
You have to give us the other expressions :)
Step-by-step explanation:
Answer:
<CDG and <CDB are supplementary angles.
<span>N/-1.5=-1.2
</span>
<span>-1.5*N/-1.5=-1.2*-1.5
n = 1.8
</span>
In the first series, the summation applies to the whole (2n+3) inside
the parentheses, so the 3 gets summed up 5 times.
But in the second one, the summation only applies to the 2n , so
the 3 is only added after the summation is finished.
The difference between five 3s the first time and one 3 the second time
is your 12 .
