#$&*
course MTH 177
9/2 4:51 PM
Question: `q005. Solve by elimination the system of equations 2x + 3 y = 9, 4 x + 5 y = 5.
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your solution:
To eliminate the variable x you need to multiply the top equation by -2 in order to get -4 for the top, canceling the bottom’s positive 4, then you proceed to solve for Y, finding that it is 13, then you plug the 13 in for Y, solving to find that x= -15.
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Question: `q006. Solve by elimination the system of equations 2x + 3 y - z = 7, 4 x - y + z = 3, 5 x + y - 2z = 5.
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Your solution:
I would like to ask you about this equation, I tried every way from khans website and could not get the correct answer.
"
Self-critique (if necessary):
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Self-critique rating:
#$&*
course MTH 177
9/2 4:51 PM
Question: `q005. Solve by elimination the system of equations 2x + 3 y = 9, 4 x + 5 y = 5.
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your solution:
To eliminate the variable x you need to multiply the top equation by -2 in order to get -4 for the top, canceling the bottom’s positive 4, then you proceed to solve for Y, finding that it is 13, then you plug the 13 in for Y, solving to find that x= -15.
*********************************************
Question: `q006. Solve by elimination the system of equations 2x + 3 y - z = 7, 4 x - y + z = 3, 5 x + y - 2z = 5.
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your solution:
I would like to ask you about this equation, I tried every way from khans website and could not get the correct answer.
"
Self-critique (if necessary):
------------------------------------------------
Self-critique rating:
#*&!
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Can you show me details of the work you've done on this problem and your thinking on it?
For example, if you multiply the first equation by -2 and the second by 1, then add the equations, do you see that the x term disappears, leaving you just an equation that can be solved for y?
What numbers could you multiply the two equations by in order that adding the equations would eliminate y, giving you an equation you can solve for x?
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