document.write( "Question 206944: Solve the system of equations by any method.
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document.write( "7x + 15y = 32
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document.write( "x = 3y + 20\r
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Algebra.Com's Answer #156435 by mmr(:(1)![]() ![]() ![]() You can put this solution on YOUR website! 7x + 15y = 32 \n" ); document.write( "x = 3y + 20 \n" ); document.write( "you put x in for x. \n" ); document.write( "7(3y+20)+15y=32 multiple by using the distrutive property. \n" ); document.write( "21y+140+15y=32 add a like terms. \n" ); document.write( "36y+140=32 take the opposite of 140(-140) and subtract it from both sides. \n" ); document.write( "36y=-108 divide 36 to both sides. \n" ); document.write( "y=-3 \n" ); document.write( "then you fill the y in \n" ); document.write( "x=3y+20 \n" ); document.write( "x=3(-3)+20 multiple 3 times -3 \n" ); document.write( "x=-9+20 add -9 to 20 \n" ); document.write( "x=11\r \n" ); document.write( "\n" ); document.write( "(11,-3) \n" ); document.write( " |