document.write( "Question 34254: solve the following equations for x and y.\r
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document.write( "1.x+y=25
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document.write( "y=4x\r
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document.write( "2.x=y+8
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document.write( "2x+y=52\r
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document.write( "5. 3x+y=33
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document.write( "x=y-13\r
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document.write( "7.x-y=-10
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document.write( "3x=y+18 \n" );
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Algebra.Com's Answer #20634 by benni1013(206)![]() ![]() ![]() You can put this solution on YOUR website! I will help you solve one and you solve the others. \n" ); document.write( "This is called solving equations by substitution.\r \n" ); document.write( "\n" ); document.write( "x+y=25 and y=4x. Hold on we know that y=4x plug that into the first equation. \n" ); document.write( "x+4x=25==>5x=25==>x=5.\r \n" ); document.write( "\n" ); document.write( "Plug in 5 into one of the equations in order to get y. 5(4)=20. \n" ); document.write( "Use this process for the remaining questions. \n" ); document.write( " |