document.write( "Question 1159946: solving system of equations by substitution y=1/3x-4 and y=-7/3x+4? \n" ); document.write( "

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\n" ); document.write( "solving system of equations by substitution y=1/3x-4 and y=-7/3x+4?
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document.write( "We can either substitute eq (i) into eq (ii), or vice-versa, which ultimately will result in the equations being set equal to each other, as in: 
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document.write( "x - 12 = - 7x + 12 ------ Multiplying by LCD, 3
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document.write( "x + 7x = 12 + 12
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document.write( "8x = 24
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document.write( " ----- Substituting 3 for x in eq (i)
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