Question 1009459


1. 

{{{11-3(a+4)=3a-25}}} 

{{{11-3*a+(-3)4=3a-25}}}

{{{11-3a-12=3a-25}}}

{{{11+25-12=3a+3a}}}

{{{36-12=6a}}}

{{{24=6a}}}

{{{24/6=a}}}

{{{a=4}}}


2. 

{{{2(x-3)-3(4-x)=4(3-x)-6(6-6)}}}

{{{2x-6-(12-3x)=12-4x-6(0)}}}

{{{2x-6-12+3x=12-4x-0}}}

{{{5x-18=12-4x}}}

{{{5x+4x=12+18}}}

{{{9x=30}}}

{{{x=30/9}}}

{{{x=10/3}}}


3. 

{{{-16=3(x-5)+4(3-x)}}}

{{{-16=3x-15+12-4x}}}

{{{-16=-3-x}}}

{{{-16+x=-3}}}

{{{x=16-3}}}

{{{x=13}}}