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y + 2x = -1 3y - x = 4 A. (-1,1) B. (1,1) C. no solution
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y + 2x = -1 3y - x = 4 Rearrange 2x+y = -1 -x+3y = 4
so C? sorry idk
@ChiefArnav
2x+y = -1 multiply yhis by 2 *this
multiply -1 by 2?
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or2x by 2?
2x+y = -1 each term by 2 i.e. 2x*2 + 2*y = -1*2
4x+?=2 or -2 sorry i suck at math :/
4x+2y = -2
oh ok almost had it lol
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2x+y = -1 -x+3y = 4 Take 2x+y=-1 y = -1-2x Use this value of y in -x+3y = 4 i.e. -x+3(-1-2x) = 4
-x - 3 - 6x = 4 -x-6x = 4+3 -7x = 7 x = 7/-7 x = -1
Now, y = -1-2x use x = -1 here y = -1-2(-1) y = -1+2 y = 1 Therefore,A
thnx :)
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