<span>With algebraic expressions, you can’t add and subtract any terms like you can add and subtract numbers. Terms must be like terms in order to combine them. So, you can’t always simplify an algebraic expression by following the order of operations. You have to use the distributive property to rewrite the expression and then combine like terms to simplify. With numeric expressions, you can either simplify inside the parentheses first or use the distributive property first.</span>
Answer: x-7
Step-by-step explanation:

<em><u>Answer:</u></em>MN = 4 units
<u><em>Explanation:</em></u><u>1- getting the value of m:</u><u>We are given that:</u>
NQ = 4m and NQ = 12
<u>This means that:</u>
12 = 4m

m = 3
<u>2- getting MQ:</u><u>We are given that:</u>
MQ = 5m + 1
<u>We have calculated that:</u>
m = 3
<u>Therefore:</u>
MQ = 5(3) + 1 = 15 + 1 = 16 units
<u>3- getting MN:</u>We are given that point N is located somewhere between points M and Q.
<u>This means that:</u>
line MQ can be divided into two portions: MN and NQ
<u>This also means that:</u>
length of MQ = length of MN + length of NQ
<u>We have calculated that:</u>
MQ = 16 units
<u>We are given that:</u>
NQ = 12 units
<u>Therefore:</u>
16 = length of MN + 12
length of MN = 16 - 12
length of MN = 4 units
Hope this helps :)
Answer:
it is correct :>
Step-by-step explanation:
<3hope it heps
She would have $23.52 because 12 times 3 is 36 and 36-12.48=23.52