Solve the system of equations. y = 7x + 43 y = 2x + 13 a. ( -6, 1) c. ( 6, 1) b. ( 6, -1) d. No solution
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Subtract both equations.
so 5 and then 30
@AravindG
Take 30 to the other side 5x=-30 x=?
-6
Yep :)
y = -5x + 24 y = 4x - 21 a. ( -5, -1) c. ( -1, 5) b. ( 5, -1) d. No solution
can you help me work through this one?
y = 2x + 13 Put x=-6
First lets finish this question.
Do you want to use the substitution method or the Addition/Elimination method?
ist (-6,1)
Yep :)
Yep, it's A. :)
y = -6x + 9 y = -3x + 3
subtract both as before.
-3 and 6
-3x+6=0 x=?
(2,-3)
Good work!!!
The sum of two numbers is 98. Their difference is 22. Write a system of equations that describes this situation. Solve by elimination to find the two numbers. a. x + y = 98 x – y = 22 55 and 33 c. x – y = 98 x + y = 22 59 and 39 b. x + y = 98 x – y = 22 60 and 38 d. x + y = 22 y – x = 98 55 and 39
Please post your questions separately. Don't use a single thread for all your questions. Close this question and post this separately.
x + y = 98 x - y = 22 -------------add 2x = 120 x = 60 now sub 60 in for x in either of the equations to find y can you do that ?
I did the work already and I got b. Your b and c are messed up a little by the way. XD x=60 y=38
lol...I noticed that too...she went from A to C to B to D
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