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Mathematics 7 Online
OpenStudy (anonymous):

what number properties is used to get from 3x+4y+3x-3y-4x to 2x+y=0 and then to y=-2x? i have 3x+4y+3(x-y)-4x which is the given then 3x+4y+3x-3y-4x which is the distributive property and then after that i got 2x+y=0 but im not sure which property this is and then i got y=-2x..and would this just be the answer? please help! i really have like no time left i need some help!

OpenStudy (anonymous):

All i need is the property names. pleaase!

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