Time remaining:
Algebra 2 Substitution

Algebra
Tutor: None Selected Time limit: 1 Day

Not really sure what to put, it's simple substitution with two equations. I have no idea at all how to do it.

Oct 22nd, 2014

Ok, without the equations, I will try to make this as encompassing as possible. Say you have an equation of 4x+y=16 & 12x+4y=52, you can solve these with "simple substitution." 

To do this type of problem, you pick one of these equations and solve it for one of the equations. I will take the first equation and solve it for y.

Doing this leaves y=16-4x. 

Now plug this into the second equation and replace the "y" with "16-4x" and solve for x to get a numerical value. 

Ex:

12x + 4(16-4x) = 56

12x + 64 - 16x = 52

-4x = -12

x=3


Now you take this "x=3" value and plug it into the other equation and solve for y.

4(3) + y = 16

y=4

So now you have x=3 and y=4. Now you're done!


Hope this helps.

Oct 22nd, 2014

Are you studying on the go? Check out our FREE app and post questions on the fly!
Download on the
App Store
...
Oct 22nd, 2014
...
Oct 22nd, 2014
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer