document.write( "Question 20045: I am trying to help my 9th grader with algebra and I haven't a clue...She gets confused with the negative/positive part. When do you change or not: this is the problem: 3(5y+2)=4(3y+2)-1
\n" ); document.write( "PLEASE help. thanks dw
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Algebra.Com's Answer #9656 by elima(1433)\"\" \"About 
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3(5y+2)=4(3y+2)-1
\n" ); document.write( "First distribute the 3 and the 4;
\n" ); document.write( "15y+6=12y+8-1
\n" ); document.write( "15y+6=12y+7
\n" ); document.write( "Get the variable to one side; so you will subtract the 12y from both sides;
\n" ); document.write( "15y+6-12y=12y+7-12y
\n" ); document.write( "Now you have;
\n" ); document.write( "3y+6=7, now move the 6 to the other side;
\n" ); document.write( "3y+6-6=7-6
\n" ); document.write( "3y=1
\n" ); document.write( "Divide each side by 3;
\n" ); document.write( "\"3y%2F3\"=\"1%2F3\"
\n" ); document.write( "y=\"1%2F3\"\r
\n" ); document.write( "\n" ); document.write( "The rule for when to use negative or positive would;
\n" ); document.write( "You do the OPPOSITE OPERATION!
\n" ); document.write( "So if you have a problem such as;
\n" ); document.write( "7x+3=-4
\n" ); document.write( "you will subtract 3 from both sides because it is being added.
\n" ); document.write( "7x+3-3=-4-3
\n" ); document.write( "In the case of;
\n" ); document.write( "3x-5=16
\n" ); document.write( "You would add 5 to both sides because it is being subtracted.
\n" ); document.write( "3x-5+5=16+5
\n" ); document.write( "That is what I mean by the opposite operation. In the first case the operation was addition; the opposite would be subtraction, in the second case the operation was subtraction so the opposite would be addition!
\n" ); document.write( "Hope you understand!
\n" ); document.write( "If not let me know!
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