document.write( "Question 131372: 13a-15b-a+2b can u solve this please going back to school in fall to study forensic science need to get through this placement test \n" ); document.write( "
Algebra.Com's Answer #95892 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"13a-15b-a%2B2b\" Start with the given expression\r
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\n" ); document.write( "\n" ); document.write( "\"%2813a-a%29%2B%28-15b%2B2b%29\" Group like terms\r
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\n" ); document.write( "\n" ); document.write( "\"12a-13b\" Combine like terms
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