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Mathematics 20 Online
OpenStudy (anonymous):

YOU ARE SUBSITUTING FOR X AND Y ? 2x-y=3 5x-2y=10

OpenStudy (campbell_st):

ok... so take the 1st equation and make y the subject... it becomes y = 2x - 3 now substitute it into the 2nd equation 5x + 2(2x -3) = 10 so its a case of 1. distributing the 2 2. collect the like terms 3. solve for x hope it helps

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