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OpenStudy (anonymous):
5x+7y=32 8x+6y=46
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OpenStudy (anonymous):
What is the solution of the system? Use elimination.
OpenStudy (anonymous):
5x+7y=32 8x+6y=46 ___________ 48y=256 30y=276 _________ 18y=-20 sorry my math is not good...
jhonyy9 (jhonyy9):
5x+7y=32 8x+6y=46 divide both sides by 2 5x+7y=32 multiply by -4 4x+3y=23 multiply by 5 -20x-28y=-128 20x+15y=115 ------------------- assume 0 -13y=-13 so y= -13/(-13) =1 so y=1 20x+15*1=115 so 20x=115-15 so 20x=100 so x=100/20 =5 x=5 y=1
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