Answer:
In order to subtract fractions, there must be a common denominator (the number on the bottom of the fraction). 7 and 3 can be multiplied to get 21 (a common factor). To get each fraction to have a denominator of 21, they can be multiplied by 3 and 7 respectively and then subtracted. Attached is an image of the problem worked out. I apologize for the messy handwriting. Hope this helps!
Step-by-step explanation:
Answer:21.9FM
Step-by-step explanation:
I think it's likely (but what's the question)
X - the rate charged by the first mechanic
y - the rate charged by the second mechanic
The sum of the two rates was $155.
The first mechanic worked for 10 hours, the second mechanic worked for 5 hours, and together they charged $1000.
Set 155-x and 200-2x equal to each other:
The rate charged by the first mechanic was $45, and the rate charged by the second mechanic was $110.
