document.write( "Question 985492: I am trying to do systems of equations for algebra 2 I am stuck on the first problem which is 5x+4y=6
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document.write( " -2x-3y= -1 can you help me out so far I have subtracted 5x - 2x and got 3x and I subtracted 3y from 4y and I have subtracted 6- -1 and got the equation 3x- 1y = 7 I think I cancel out the y value and divide 3x by 3 and 7 divided by 3 but I don't know I'm stuck please help me asap \n" );
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Algebra.Com's Answer #606327 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "5x+4y=6 Multiply this by 2. This will help get 2 equations with equal x's. \n" ); document.write( "10x+8y=12 Add this below. \n" ); document.write( ". \n" ); document.write( "-2x-3y=-1 Multiply this by 5. \n" ); document.write( "-10x-15y=-5 Add equation from above. \n" ); document.write( "(-10x-15y)+(10x+8y)=-5+12 \n" ); document.write( "-7y=7 \n" ); document.write( "y=-1 Substitute this in one of the original equations. \n" ); document.write( "5x+4y=6 \n" ); document.write( "5x+4(-1)=6 \n" ); document.write( "5x-4=6 \n" ); document.write( "5x=10 \n" ); document.write( "x=2 \n" ); document.write( ". \n" ); document.write( "CHECK (Use the other original equation): \n" ); document.write( "-2x-3y=-1 \n" ); document.write( "-2(2)-3(-1)=-1 \n" ); document.write( "-4+3=-1 \n" ); document.write( "-1=-1 \n" ); document.write( ". \n" ); document.write( "The answer is (2,-1) \n" ); document.write( " \n" ); document.write( " |