SOLUTION: I keep getting the wrong answer for this equation. I was wondering what the answer was to see if maybe the book was wrong. I keep getting 1/2 and the book writes 2. 7P-2(3-4P)=

Algebra ->  Equations -> SOLUTION: I keep getting the wrong answer for this equation. I was wondering what the answer was to see if maybe the book was wrong. I keep getting 1/2 and the book writes 2. 7P-2(3-4P)=      Log On


   

Question 114624: I keep getting the wrong answer for this equation. I was wondering what the answer was to see if maybe the book was wrong. I keep getting 1/2 and the book writes 2.
7P-2(3-4P)=12P-(P+4)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
your result is correct one.....

7P-2%283-4P%29=12P-%28P%2B4%29
7P-6-8P=12P-P-4
15P-6+=11P+-4........move 11P to the left and -6 to the right
15P-+11P+=+6+-4........
4P++=++2……….divide both sides by 4
4P%2F4++=++2%2F4……….
P++=++1%2F2……….
check the result from the book: plug in P=2
7P-2%283-4P%29=12P-%28P%2B4%29
7%2A2+-+2%283-4%2A2%29=12%2A2-%282%2B4%29
14+-+2%28-5%29=24-6
14+%2B10+=+24-6
24=+18.......the book was wrong

check your result : plug in P=1%2F2
7P+-2%283-4P%29=12P-%28P%2B4%29
7%2A1%2F2+-+2%2A3+%2B+8%2A1%2F2%29=+12%2A1%2F2+-%281%2F2%2B4%29
3.5+-+6+%2B+4+=+6+-+4.5
3.5+-+2+=+1.5
1.5++=+1.5