jennyGx
jennyGx
06-08-2017
Mathematics
contestada
I really need help :(...............
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jimthompson5910
jimthompson5910
06-08-2017
Add the terms straight down (ie add like terms)
For the x terms
(3x) plus (-3x) = 3x-3x = (3-3)x = 0x = 0
The result being zero means the x terms effectively cancel out and go away
For the y terms
(-y) plus (3y) = -1y+3y = (-1+3)y = 2y
And finally the terms on the right hand side
(-1) plus (27) = -1+27 = 26
---------------------------------------------------------------
After adding the two equations, we end up with 0+2y = 26
which simplifies to
2y = 26
. So the
answer is choice D
Answer Link
Noah11012
Noah11012
06-08-2017
Add the left hand side parts together and right hand side parts together.
3x - y - 3x + 3y = 2y
-1 + 27 = 26
So, 2y = 26 is the answer.
Answer Link
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