I am trying to solve this equation:
7x + 3y = 12
3x + 7y = 6
If x and y satisfy the system of equations above, what is the value of x-y?
I have tried really hard to solve this, I am appalling bad at Math ! Any help would be appreciated..
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Using elimination, we could multiply the first equation by 3 and the second by -7 to get:
Now, add the equations to eliminate x, and then solve for y. Then plug in this value for y into either original equation to find x.
What do you find?
easy way to find x-y in this question is just subtract 2nd equation from 1st and then divide the whole by 4
LOL, I misread the question, I thought the OP was wanting to find (x,y), not x - y.
Thanks guys !