document.write( "Question 241466: \n" ); document.write( "

Algebra.Com's Answer #176835 by stanbon(75887) $\"\"$ $\"About$

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Solve using the substitution method. First, solve one equation for one variable.
\n" ); document.write( "s + t = - 4,
\n" ); document.write( "s - t = 2
\n" ); document.write( "--------------------
\n" ); document.write( "solve the 2nd for \"s\":
\n" ); document.write( "s = t+2
\n" ); document.write( "-------------------
\n" ); document.write( "Substitute into to 1st and solve for \"t\":
\n" ); document.write( "t+2 + t = -4
\n" ); document.write( "2t + 2 = -4
\n" ); document.write( "2t = -6
\n" ); document.write( "t = -3
\n" ); document.write( "------
\n" ); document.write( "Since s = t+2, s = -3+2 = -1
\n" ); document.write( "================================================
\n" ); document.write( "Solution:
\n" ); document.write( "t = -3
\n" ); document.write( "s = -1
\n" ); document.write( "==========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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