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You know to use variables?
ok. im pretty you know how to do this then. what have you done so far?
A + B = 170 A - B = 26
okay so then wat do i do next?
now, rearrange one of the equations to solve for either a or b.
okay so then will it be: 26+b=170?
idk how tor do this ;(
no...i dont think so...
take A + B = 170. can you isolate a for me?
a=-b+170. good. now sub that into A - B = 26 (for a)
So then would b=144
i dunno. maybe?
wat do u mean maybe???
i didnt do the math myself
you have to divide that by 2...
and originally, it would have been -144, not 144
You can do all of that or you can simply add both equations together: A + B = 170 A - B = 26 ___________ 2A = 192 A = 192/2 A = 96 B = A - 26 B = 96 - 26 B = 70
so it would be 72?
Well I obviously added wrong
yah think lol ;)
A + B = 170 A - B = 26 ___________ 2A = 196 A = 196/2 A = 98 B = A - 26 B = 98- 26 B = 72
Okay thnk u @hero but @NotTim cna u still help me solve the second part?
What second part?
You were only supposed to find the two numbers. A is one number. B is the other number. A = 98 B = 72 Is there something else you need to find besides that?
No i need to know how to find 98 word for word
When solving systems of equations, there are five methods you can use: 1. Substitution 2. Elimination 3. Addition 4. Graphing 5. Slope-Intercept
Which method are you confused about?
okay this is wat i'm tlking about: how did u get 2A=196?
I added the two equations together.
The elimination method involves adding equations together to eliminate variables.
In this case I added A + B = 170 to A - B = 26. When you add two equations together, you add like terms. Therefore: A + A = 2A B - B = 0 170 + 26 = 196 Thus 2A + 0 = 196 or simply 2A = 196
Ok is this how u do it: > a-b=26 > -b=-a+26 > -170=-a+26 > -a=196 > 196/2=x > x= 98 ..Did i do tht right? :)
Where did x come from? We started out with variables A and B. Look at the drawing I posted above. That is the simplest way of understanding how to get from the given equations to 2A = 196
By the way -a = 196 is false so you must have done something wrong.
well a=196..there....nd the x is just a random thing wat is it suppose to be a or b?
2A = 196
okay tht does make it easier becuz all u wuld have to do to is divide the 2 by the 196...thnk u ;)