document.write( "Question 761405: -4x+y=10 3x+19y=32 solve using substitition method \n" ); document.write( "
Algebra.Com's Answer #463203 by Cromlix(4381)\"\" \"About 
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-4x + y = 10.........1
\n" ); document.write( " 3x + 19y = 32.......2
\n" ); document.write( "Multiply (1) by 3 and (2)by 4
\n" ); document.write( "-12x + 3y = 30.......3
\n" ); document.write( " 12x + 76y = 128.....4
\n" ); document.write( "Add (3) + (4)
\n" ); document.write( " 79y = 158
\n" ); document.write( " y = 2
\n" ); document.write( "Substitute y = 2 into (2)
\n" ); document.write( " 3x + 19y = 32
\n" ); document.write( " 3x + 19(2) = 32
\n" ); document.write( " 3x + 38 = 32
\n" ); document.write( " 3x = 32 - 38
\n" ); document.write( " 3x = -6
\n" ); document.write( " x = -2
\n" ); document.write( "x = -2 y = 2.
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-) \n" ); document.write( "
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