document.write( "Question 557195: Solve the linear system by using substitution method in -5x+3y=51 and y=10x-8 \n" ); document.write( "

Algebra.Com's Answer #362606 by kennyxx12(3) $\"\"$ $\"About$

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ok one is already isolated for y
\n" ); document.write( "y=10x-8
\n" ); document.write( "substitude it y=10x-8 this equals to y
\n" ); document.write( " now plug it in
\n" ); document.write( " -5x+3y=51(original formulae)
\n" ); document.write( " -5x+3(10x-8)=51(after substitution)\r
\n" ); document.write( "\n" ); document.write( " -5x+30x-24=51
\n" ); document.write( " 25x-24=51
\n" ); document.write( " ADD 24 TO BOTH SIDES
\n" ); document.write( " 25X=75
\n" ); document.write( " DIVIDE
\n" ); document.write( " X=3
\n" ); document.write( "NOW SUBSTITUTE X ON THE OTHER FORMULAE
\n" ); document.write( "Y=10(3)-8
\n" ); document.write( "Y=30-8\r
\n" ); document.write( "\n" ); document.write( "Y=22
\n" ); document.write( "X=3
\n" ); document.write( "ANSWER (3,22) \n" ); document.write( "

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