document.write( "Question 637824: show me how to find the measure of each marked angle. A+B=180. A=(10x+7)B=(7x+3) \n" ); document.write( "
Algebra.Com's Answer #401900 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"A%2BB=180\".........1\r
\n" ); document.write( "\n" ); document.write( "\"+A=%2810x%2B7%29\"........2\r
\n" ); document.write( "\n" ); document.write( "\"B=%287x%2B3%29\"....3\r
\n" ); document.write( "\n" ); document.write( "______________\r
\n" ); document.write( "\n" ); document.write( "\"A%2BB=180\"...plug 2 and 3 in 1 and solve for \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"%2810x%2B7%29%2B%287x%2B3%29=180\"\r
\n" ); document.write( "\n" ); document.write( "\"10x%2B7%2B7x%2B3=180\"\r
\n" ); document.write( "\n" ); document.write( "\"17x%2B10=180\"\r
\n" ); document.write( "\n" ); document.write( "\"17x=180-10\"\r
\n" ); document.write( "\n" ); document.write( "\"17x=170\"\r
\n" ); document.write( "\n" ); document.write( "\"x=170%2F17\"\r
\n" ); document.write( "\n" ); document.write( "\"x=10\".........now find \"A\" and \"B\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"+A=%2810x%2B7%29\"........2..plug in \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"+A=10%2A10%2B7\"\r
\n" ); document.write( "\n" ); document.write( "\"+highlight%28A=107%29\"\r
\n" ); document.write( "\n" ); document.write( "\"B=%287x%2B3%29\"....3..plug in \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"B=7%2A10%2B3\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28B=73%29\"\r
\n" ); document.write( "\n" ); document.write( "check:\r
\n" ); document.write( "\n" ); document.write( "\"A%2BB=180\".........1\r
\n" ); document.write( "\n" ); document.write( "\"107%2B73=180\"\r
\n" ); document.write( "\n" ); document.write( "\"180=180\"\r
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