Question 106686
{{{2/5x-6=12}}}

Do I multiply both sides by 5

-DW
no, you need to multiply both sides with denominator which is {{{5x}}}

{{{(2/5x)*5x - 6*5x = 12*5x}}}

{{{2 - 30x = 60x}}}.......add {{{+ 30x}}} to both sides

{{{2 + 30x - 30x = 60x + 30x}}}

{{{2 = 90x}}}

or
{{{90x = 2}}}......divide both sides by {{{2}}}

{{{45x = 1}}}  ........divide both sides by {{{45}}}

{{{45x/45 = 1/45}}}

{{{x = 1/45}}}