document.write( "Question 997847: Five times a number decreased by 18 minus 4 times the same number is negative 36 what is tge number? \n" ); document.write( "

Algebra.Com's Answer #615779 by addingup(3677) $\"\"$ $\"About$

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5x-18-4x= -36 What did I do? I took the words and wrote them out:
\n" ); document.write( "5x: 5 times a number
\n" ); document.write( "- :decreased
\n" ); document.write( "18-4x: by 18 minus 4 times the same number
\n" ); document.write( "= -36: is negative 36
\n" ); document.write( "---------------------
\n" ); document.write( "Solve:
\n" ); document.write( "5x-18-4x= -36 Add 18 to both sides:
\n" ); document.write( "5x-18+18-4x= -36+18
\n" ); document.write( "5x-4x= -18 Subtract x on left:
\n" ); document.write( "1x= -18 1x is the same as saying x:
\n" ); document.write( "x= -18
\n" ); document.write( "Proof:
\n" ); document.write( "5(-18)-18-4(-18)= -36 (beware of + and - !)
\n" ); document.write( "-90-18+72= -36 (get the 72? -4*-18 and -*-= +)
\n" ); document.write( "-108+72=-36
\n" ); document.write( "-36=-36 We have the correct answer \n" ); document.write( "

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