Let n = number
"3 times the sum of a number and 7" translates to 3(n + 7)
"2 less than five times the number" translates to 5n - 2
The word "is" becomes the equals sign.
3(n + 7) = 5n - 2
I think you already asked this one.
Step by step explanation :
The two points are ,
We can find the midpoint by finding the median of x coordinate and y coordinate .

Answer:
4*3=12
12*4=
3*3=9
9*2=18
18+48=66
Step-by-step explanation:
Answer:

Step-by-step explanation:
We must develop three equations in three unknowns.
I will use these three:



Answer:
3 rd one
Step-by-step explanation:
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