document.write( "Question 552848: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
\n" ); document.write( "5x + 35y = -10
\n" ); document.write( "15x + 5y = 170 \n" ); document.write( "

Algebra.Com's Answer #360561 by mananth(16946) $\"\"$ $\"About$

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5 x + 35 y = -10 .............1
\n" ); document.write( "15 x + 5 y = 170 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by -7
\n" ); document.write( "5 x 35 y = -10
\n" ); document.write( "-105 x -35 y = -1190
\n" ); document.write( "Add the two equations
\n" ); document.write( "-100 x = -1200
\n" ); document.write( "/ -100
\n" ); document.write( "x = 12
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "5 x + 35 y = -10
\n" ); document.write( "60 + 35 y = -10
\n" ); document.write( " 35 y = -10-60
\n" ); document.write( " 35 y = -70
\n" ); document.write( " y = -2
\n" ); document.write( " \n" ); document.write( "

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