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20 votes
20 votes
Please help asap, I need this done in 10 mins

Please help asap, I need this done in 10 mins-example-1
User Kikoralston
by
2.6k points

2 Answers

12 votes
12 votes

Answer:


-(4)/(3) or
-1(1)/(3)

Explanation:

I could be 100% wrong ( I solved the problem the way it looks like it should be, but I don't recognize this way of writing one of these) but here we go:


f(x)=(7x+1)/(3)-(4x-5)/(3) \\f(x)-x=(7x+1)/(3)-(4x-5)/(3)-x \\=(7x+1)/(3)+(-4x+5)/(3)-x \\=(3x-6)/(3)-(3x)/(3)\\ =-(6)/(3)=-2

A little explanation:

Consider that f(x) is equal to what they tell you it is. With that in mind, f(x)-x would most likely be what they told you f(x) was with a "-x" slapped onto it.

Also:


(3x)/(3)=x because any number divided by itself is one so 3/3=1 and 3x/3=1x=x

Hope I could help :)

User Glorin Oakenfoot
by
2.5k points
24 votes
24 votes

Answer:

f(x) - x = 2

Explanation:


f(x)-x\\\\=(7x+1)/(3)-(4x-5)/(3)-x\\\\=(7x+1)/(3)-(4x-5)/(3)-(3x)/(3)


=((7x+1)-(4x-5)-3x)/(3)\\\\=(7x+1-4x+5-3x)/(3)\\\\=(6)/(3)\\\\=2

User Skydoor
by
2.6k points