First you had to add by seven from both sides of equation form.

Then simplify by equation.

Next, you multiply by two from both sides of equation form.

And finally, simplify by equation.





Final answer: 
Hope this helps!
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-Charlie
Solution is 10. How?
I dont know if it helps but tell me if it does
Answer:
18 hours
Step-by-step explanation:
There are 24 hours in a day and we have 5 weekdays per week.
15% of 24 hours
15/100×24
0.15×24
=3.6 hours
Mrs Miller spends 3.6 hours of each weekday traveling in her car.
There are 5 weekdays in a week to include: Monday, Tuesday, Wednesday, Thursday and Friday.
If she spends 3.6 hours per weekday
Then,
During the week, she will spend
3.6 hours× 5 weekdays
=18 hours
She will spend 18 hours per week traveling in her car.
N equals 7. you need to subtract 0.6 from both sides and then multiply both sides by 5 to get the answer