document.write( "Question 410118: Solve this system of equations by the substitution method\r
\n" ); document.write( "\n" ); document.write( "7x - 4y = 13 (1)\r
\n" ); document.write( "\n" ); document.write( "x=3 (2)
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Algebra.Com's Answer #288488 by Coyote 10(7)\"\" \"About 
You can put this solution on YOUR website!
Simply substitue 3 in for x so ypur equation would look like 21-4y=13. Subtract 21 to one side so your equation to get -4y=-8. divide by four so y=2. thus (x,y)= (3,2) \n" ); document.write( "
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