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 Closed

Mrs.Math101Best ResponseYou've already chosen the best response.1
the 3y cancels out, so 7x+5x=12x and 20+16= 36so the new equation is 12x=36
 2 years ago

ravi623Best ResponseYou've already chosen the best response.3
add two equations and u will get 12x=36 so x=3, put this value of x in any equation, u will get the value of y
 2 years ago

huntaz556Best ResponseYou've already chosen the best response.0
I thought with elimination you were supposed to multiply one of the equations to make it the same as the other? Im not completely sure thats why i asked here :P
 2 years ago

GTBest ResponseYou've already chosen the best response.0
Well, you do need to multiply one or both equations to make the coefficient of one of the variables same (constant before the variable). In this case, the coefficient of y is already the same (3). So, you don't need to multiply to do elimination.
 2 years ago

GTBest ResponseYou've already chosen the best response.0
If you had for example x + 2y = 5 2x + y = 7 Then, you will have to multiply the second equation by 2 to eliminate y. Or, multiply the first equation by 2 to eliminate x.
 2 years 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.