document.write( "Question 1107608: 3x+4y=62 & 5x+2y=52 \n" ); document.write( "
Algebra.Com's Answer #722616 by addingup(3677)![]() ![]() You can put this solution on YOUR website! 3x+4y=62 & 5x+2y=52 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "5x+2y=52: multiply all times -2 and add to the other equation \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "3x+4y=62 \n" ); document.write( "+ \n" ); document.write( "-10x-4y= -104 \n" ); document.write( "-------------- \n" ); document.write( "-7x 0y = -42 \n" ); document.write( "-7x = - 42 \n" ); document.write( "x = -42/-7 divide to get your answer. Remember that -/- = + so in this case you can ignore the - sign, just divide 42/7 or do it in your head, by now you should know that 42 is the product of 7 x 6 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "Now find y, substitute in the original equations: \n" ); document.write( "3x+4y=62; 3(6)+4y = 62; 18+4y = 62; 4y = 44; y = 11 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "Check: let's try the answers in the two equations: \n" ); document.write( "3x+4y=62; 3(6)+4(11) = 62; 18+44 = 62 Correct \n" ); document.write( "Now the other equation: \n" ); document.write( "5x+2y=52; 5(6)+2(11) = 52; 30+22 = 52 Also correct. \n" ); document.write( "You now have the correct answers. \n" ); document.write( " |