Question 893280
{{{90=2x+(4x-12)}}}
Associative property
{{{90=(2x+4x)-12}}}
Distributive property
{{{90=x(2+4)-12}}}
{{{90=x(6)-12}}}
{{{90=6x-12}}}
Additive inverse of {{{-12}}}
{{{90+12=6x-12+12}}}
{{{102=6x+0}}}
{{{6x=102}}}
Mutliplicative inverse of {{{6}}}
{{{(1/6)6x=102/6}}}
{{{(1)x=17}}}
{{{x=17}}}