document.write( "Question 178768: -7+4r=-15 what is the answer with showing work \r
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Algebra.Com's Answer #133756 by Mathtut(3670)\"\" \"About 
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-7+4r=-15
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\n" ); document.write( "4r=-8.....added 7 to both sides
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\n" ); document.write( "\"highlight%28r=-2%29\"divided both sides by 4 to isolate the variable r
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\n" ); document.write( "-5x+13=-17
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\n" ); document.write( "-5x=-30.....subtracted 13 from both sides
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\n" ); document.write( "\"highlight%28x=6%29\"divided both sides by -5 to isolate the variable x
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