document.write( "Question 1046442: Solve the system of equations by the substitution method. (If there is no solution, enter NO SOLUTION.)
\n" ); document.write( "{0.25x + 0.4y = −3
\n" ); document.write( "{0.5x − 0.6y = 8
\n" ); document.write( "

Algebra.Com's Answer #662131 by Boreal(15235)\"\" \"About 
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{0.25x + 0.4y = −3
\n" ); document.write( "{0.5x − 0.6y = 8\r
\n" ); document.write( "\n" ); document.write( "Multiply the top by -2, and the x will be the same with opposite signs.
\n" ); document.write( "-0.50x-0.8y=6
\n" ); document.write( "0.5x-0.6y=8. Now add them.
\n" ); document.write( "-1.4y=14
\n" ); document.write( "y=-10
\n" ); document.write( "Substitute into the first to get x
\n" ); document.write( "0.25 x-4=-3
\n" ); document.write( "0.25x=-1
\n" ); document.write( "x=-4\r
\n" ); document.write( "\n" ); document.write( "Check by using the second
\n" ); document.write( "2-(-6)=8 checks.
\n" ); document.write( "(4,-10) are the solutions.
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