document.write( "Question 13739: Please help me solve the following problems and can you also show the check? pleeeeeeeeease...thx.
\n" ); document.write( "13-(2c+2)=2(c+2)+3c
\n" ); document.write( "0.7(3x+6)=1.1-(x+2)
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Algebra.Com's Answer #6888 by rahman(247)\"\" \"About 
You can put this solution on YOUR website!
13-(2c+2)=2(c+2)+3c
\n" ); document.write( "13-2c-2=\"2%2Ac%2B2%2A2%2B3c\"
\n" ); document.write( "-2c+13-2=2c+4+3c
\n" ); document.write( "-2c+11=2c+3c+4
\n" ); document.write( "-2c+11=5c+4
\n" ); document.write( "-2c-5c=4-11
\n" ); document.write( "-7c=-7
\n" ); document.write( "\"%28-7c%29%2F%28-7%29=%28-7%29%2F%28-7%29\"
\n" ); document.write( "c=1\r
\n" ); document.write( "\n" ); document.write( "Check: Substitute c = 1 to equation
\n" ); document.write( "13-(2(1)+2)=2(1+2)+3(1)
\n" ); document.write( "13-(2+2)=2(3)+3
\n" ); document.write( "13 - 4 = 6 + 3
\n" ); document.write( "9 = 9 (Q.E.D)\r
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\n" ); document.write( "\n" ); document.write( "0.7(3x+6)=1.1-(x+2)-------->multiply with 10
\n" ); document.write( "7(3x+6) = 11 - 10x - 20
\n" ); document.write( "\"7%2A3x%2B7%2A6+=-10x%2B11+-+20\"
\n" ); document.write( "\"21x%2B42=-10x-9\"
\n" ); document.write( "\"21x%2B10x=-9-42\"
\n" ); document.write( "\"31x=-51\"
\n" ); document.write( "\"31x%2F31=-51%2F31\"
\n" ); document.write( "\"x=-51%2F31\"\r
\n" ); document.write( "\n" ); document.write( "Check:
\n" ); document.write( "0.7(3x+6)=1.1-(x+2)
\n" ); document.write( "\"%287%2F10%29%283x%2B6%29=11%2F10-%28x%2B2%29\"
\n" ); document.write( "\"%287%2F10%29%283%2A%28-51%2F31%29%2B6%29=11%2F10-%28%28-51%2F31%29%2B2%29\"
\n" ); document.write( "\"%287%2F10%29%28-153%2F31%29%2B186%2F31%29=11%2F10-%28%28-51%2F31%29%2B62%2F31%29\"
\n" ); document.write( "\"%287%2F10%29%28%28-153%2B186%29%2F31%29=11%2F10-%28%28-51%2B62%29%2F31%29\"
\n" ); document.write( "\"%287%2F10%29%2833%2F31%29=11%2F10-%2811%2F31%29\"
\n" ); document.write( "\"%287%2A33%2F10%2A31%29=%2811%2A31-11%2A10%29%2F%2810%2A31%29\"
\n" ); document.write( "\"231%2F310=%28341-110%29%2F310%29\"
\n" ); document.write( "\"231%2F310=231%2F310\" (Q.E.D)\r
\n" ); document.write( "\n" ); document.write( "OK
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