Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Open

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{ x7 }{ x }+2=\frac{ x3 }{ }\]
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
is there something missing on the right side? Is anything below x3 ?
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
sorry x
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
x−7 x−3  +2=  x x
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
my first thought is to multiply both sides by x like this \[ x \cdot \left(\frac{(x7)}{x} +2\right)= x \cdot \frac{(x3)}{x} \]
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
ok \[\frac{ x(x7) }{ x^2 } = (\frac{ x(x3) }{ x^2 })\]
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
interesting... time to learn a few algebra rules. First, \[ c\cdot \frac{a}{b} \text{ is the same as } \frac{c}{1}\cdot \frac{a}{b}\] you multiply top times top and bottom times bottom so for the right hand side \[ x \cdot \frac{(x3)}{x} \] you could write it as \[ \frac{x(x3)}{x}\] but the x on top and the x on the bottom make \[ \frac{x}{x} = 1\] anything divided by itself is 1
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
but how would i multiply the equation?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
start with \[ x \cdot \left(\frac{(x7)}{x} +2\right)= x \cdot \frac{(x3)}{x} \] what do you get for the righthand side of the = ? We'll get to the left after we get the right side done
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
x^23x over x?
 one year ago

Spartan_Of_Ares Group TitleBest ResponseYou've already chosen the best response.0
@phi
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
yes, but you should always look for the same thing in the top and bottom, because they divide out. so rather than doing x(x3)/x > (x^2 3x)/x (which is correct) you should say: \[ \frac{\cancel{x}(x3)}{\cancel{x}} = (x3) \]
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
\[ x \cdot \left(\frac{(x7)}{x} +2\right)= x 3 \] on the left side, "distribute the x". that means multiply all the terms inside the parens by x (don't forget the 2) and notice that you will get x/x so you can cancel them.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.