Posted by please help(: on Monday, October 19, 2009 at 4:09pm.
1/2x - 1/4y= 7/2
3/4x + 1/3y= 19/2
To change into y=, do i multiply the top one by by 1/4 and the bottom one by -1/3?
MATH! - -, Monday, October 19, 2009 at 4:11pm
You would multiply the top one by -4 and the bottom one by +3, if you want to keep y positive.
MATH! - jim, Monday, October 19, 2009 at 4:14pm
What do you have to multiply 1/4 by to get to 1?
1/2 x - 1/4 y = 7/2
Multiply across by 4:
2x - y = 14
y = 2x -14
Now multiply the second one across by 3 to finish it yourself.
MATH! - please help(:, Monday, October 19, 2009 at 4:16pm
MATH! - please help(:, Monday, October 19, 2009 at 4:29pm
Well i can't seem to figure out the intersection on my calc. please help.
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