Question 995306

1.
{{{4(x+2)/5=7+5x/13}}}

{{{4(x+2)=(7+5x/13)5}}}

{{{4x+8=35+25x/13}}}

{{{13*4x+13*8=13*35+13(25x/13)}}}

{{{52x+104=455+25x}}}

{{{52x-25x=455-104}}}

{{{27x=351}}}

{{{x=351/27}}}

{{{highlight(x=13)}}}



2.

{{{-(x+5)/6-(x+1)/9=(x+3)/4}}}

{{{-3(x+5)/18-2(x+1)/18=(x+3)/4}}}

{{{(-3x-15-2(x+1))/18=(x+3)/4}}}

{{{(-3x-15-2x-1)/18=(x+3)/4}}}

{{{(-5x-17)/18=(x+3)/4}}}

{{{4(-5x-17)=18(x+3)}}}

{{{-20x-68=18x+54}}}

{{{-54-68=18x+20x}}}

{{{-122=38x}}}

{{{-61/19=x}}}

or, approximately

{{{x=-3.21}}}