document.write( "Question 117989This question is from textbook Beginning Algebra
\n" ); document.write( ": 4x +2y = 4
\n" ); document.write( "3x + y = 4 \n" ); document.write( "
Algebra.Com's Answer #86026 by whit838(1)\"\" \"About 
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The easiest way to solve this would be to isolate the y variable in the equation 3x+y=4
\n" ); document.write( "-3x+3x+y=4-3x
\n" ); document.write( "y=-3x+4
\n" ); document.write( "Now substitute -3x+4 in the other equation in place of y
\n" ); document.write( "4x+2(-3x+4)=4 Distribute
\n" ); document.write( "4x+-6x+8=4 add like terms
\n" ); document.write( "-2x-8=4 add -8 to both sides
\n" ); document.write( "8+-2x-8=4-8
\n" ); document.write( "-2x=-4 multiply both sides by -1/2
\n" ); document.write( "x=2
\n" ); document.write( "Go back and subtitute 2 for x in the other equation
\n" ); document.write( "3(2)+y=4
\n" ); document.write( "6+y=4
\n" ); document.write( "y=-2
\n" ); document.write( "Now to check your answers, go back and subtitute these values for x and y in either equation and see if they come out equal to 4.
\n" ); document.write( "3(2)+(-2)=4
\n" ); document.write( "6+-2=4
\n" ); document.write( "4=4
\n" ); document.write( "your answer is {2,-2}
\n" ); document.write( "make sure you put those values in a solution set and not as an ordered pair\r
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