Answer:
* 5+2k+n
Step-by-step explanation:
Combine all like terms:
7-2 = 5
5k-3k = 2k
n = n
Answer:
a) Here we have:
"In Family A, the youngest child is 7 years younger than the oldest, who is 18"
Let's define:
Y = age of the youngest child.
O = age of the oldest child.
Then we know that:
Y = O - 7
O = 18
Then we can replace the second equation into the first one:
Y = 18 - 7 = 11.
b) Here we have:
"In Family B, the middle child is 5 years older than the youngest child."
Let's define:
Y = age of the youngest child.
M = age of the middle child.
Here we have only one equation:
M = Y + 5.
Answer:
9
Step-by-step explanation:
50% off means half price, so half of 49.98 is 24.99
the necklace now costs 24.99 dollars
The value could be rewritten as 2(x+4)
