document.write( "Question 77757: I am having lots of trouble answering this equation.\r
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document.write( "Solve by substitution method:\r
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document.write( "4x + 3y = 10
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document.write( "y = 2x\r
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document.write( "Can you please help me?
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document.write( "Thank you! \n" );
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Algebra.Com's Answer #55739 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! Solve by substitution: \n" ); document.write( "4x+3y = 10 \n" ); document.write( "y = 2x Substitute this for the y in the 1st equation and solve for x. \n" ); document.write( "4x+3(2x) = 10 Simplify. \n" ); document.write( "4x+6x = 10 Combine like-terms. \n" ); document.write( "10x = 10 Divide by 10. \n" ); document.write( "x = 1 Now substitute this for the x in the 2nd equation. \n" ); document.write( "y = 2(1) \n" ); document.write( "y = 2 \n" ); document.write( "Solution is: (1, 2) \n" ); document.write( " |