document.write( "Question 803547: The angles of a triangle are represented by 5x, (8x-1) and (12 x+6) in degrees. find the measure of the angles of the triangle. I need help and already tried to make an equation but it seems wrong. Can you please show me how to do this? Thank You. \n" ); document.write( "
Algebra.Com's Answer #484415 by waynest(281) ![]() You can put this solution on YOUR website! 1st angle = 5x \n" ); document.write( "2nd angle = 8x - 1 \n" ); document.write( "3rd angle = 12x + 6 \n" ); document.write( "angles 1 + 2 + 3 = 180 \n" ); document.write( "5x + (8x - 1) + (12x + 6) = 180 \n" ); document.write( "5x + 8x + 12x - 1 + 6 = 180 \n" ); document.write( "25x + 5 = 180 \n" ); document.write( "25x + 5 - 5 = 180 - 5 \n" ); document.write( "25x = 175 \n" ); document.write( "25x/25 = 175/25 \n" ); document.write( "x = 7\r \n" ); document.write( "\n" ); document.write( "1st angle = 5(7) \n" ); document.write( " = 35 degrees \n" ); document.write( "2nd angle = 8(7) - 1 \n" ); document.write( " = 56 - 1 \n" ); document.write( " = 55 degrees \n" ); document.write( "3rd angle = 12(7) + 6 \n" ); document.write( " = 84 + 6 \n" ); document.write( " = 90 \n" ); document.write( "35 + 55 + 90 = 180 \n" ); document.write( "180 = 180 \n" ); document.write( " |