Question 114624
your result is correct one.....


{{{7P-2(3-4P)=12P-(P+4)}}}

{{{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/4  =  2/4}}}……….

{{{P  =  1/2}}}……….

check the result from the book: plug in {{{P=2}}}

{{{7P-2(3-4P)=12P-(P+4)}}}

{{{7*2 - 2(3-4*2)=12*2-(2+4)}}}

{{{14 - 2(-5)=24-6}}}

{{{14 +10 = 24-6}}}

{{{24= 18}}}.......the book was {{{wrong}}}


check your result : plug in {{{P=1/2}}}

{{{7P -2(3-4P)=12P-(P+4)}}}

{{{7*1/2 - 2*3 + 8*1/2)= 12*1/2 -(1/2+4)}}}

{{{3.5 - 6 + 4 = 6 - 4.5}}}

{{{3.5 - 2 = 1.5}}}

{{{1.5  = 1.5}}}