Question

ok lol this is my last question of the night lol i may stay on chat late but done with math!

solve the system of equation by elimination
3x+4y=31
2x-4y=6

A. (4,5)
B. (5,4)
C. (-5, 12.5)
D. (5,-4)

help me out guys @Rhystic @surd

Answer 1

add both equations....y gets eliminated....

Answer 2

b

Answer 3

and you can replace x and y by their values into both equation if you get both side equal then that is your answer

Answer 4

ok so add both together and the y is eliminated so 3 +2 is 4 4 and 4 is 8 do i add 31 and 6?

Answer 5

both rishav and nnesha are correct, but none of those solutions work....

Answer 6

is it possible you typed either the equations or the answers in wrong? if not then you received a problem with incorrect answers. there is no correct answer listed there...

Answer 7

ok i will recheck it @Rhystic

Answer 8

i rechecked it the question and options are correct at least thats what it says. @Rhystic

Answer 9

are you sure ??

Answer 10

yeah positive

Answer 11

its solve the equations by eliminations if i forgot to add that.

Answer 12

no there are many ways to solve it but all will lead to the same answer. B comes close but the second equation needs to be 2x-4y=-6 to satisfy that. There are no correct solutions there unless I'm just really tired and not paying attention or something.

Answer 13

okay then start working on that then you can see ...