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OpenStudy (anonymous):
-4x - 10y = 132 -4x + 2y = 12
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OpenStudy (anonymous):
@campbell_st :)
OpenStudy (anonymous):
@campbell_st is my new fav. (:
OpenStudy (campbell_st):
eliminate x by multiplying the 2nd equation by -1 and adding -4x -10y = 132 4x - 2y = -12 --------------- -12y = 120 y = -10 substitute into either equation to find x -4x -10(-10) = 132 x = -8
OpenStudy (anonymous):
8x + 4y = -24 6x - 8y = -84
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