document.write( "Question 223947: the second angle of a triangle is 3 times as large as the first. the third angle is 75 degrees more than the first. find the measure of the smallest angle.
\n" ); document.write( "A)105
\n" ); document.write( "B)15
\n" ); document.write( "C)21
\n" ); document.write( "D)75
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Algebra.Com's Answer #167482 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Let x = \"the first angle
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\n" ); document.write( "Write an equation for each statement
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\n" ); document.write( "\"the second angle of a triangle is 3 times as large as the first\"
\n" ); document.write( "3x = the second angle
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\n" ); document.write( "\"the third angle is 75 degrees more than the first.\"
\n" ); document.write( "x + 75 = the third angle
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\n" ); document.write( "find the measure of the smallest angle.
\n" ); document.write( "we know the 3 angle add up to 180, therefore
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\n" ); document.write( "x + 3x + (x+75) = 180
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\n" ); document.write( "x + 3x + x + 75 = 180
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\n" ); document.write( "subtract 75 from both sides, add up the x's
\n" ); document.write( "5x = 180 - 75
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\n" ); document.write( "5x = 105
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\n" ); document.write( "divide both sides by 5
\n" ); document.write( "x = \"105%2F5\"
\n" ); document.write( "x = 21
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\n" ); document.write( "You should be able to find the other two angles, make sure all 3 add up to 180
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