Question 9391
just substitute and factor

{{{2*(x-y)=8}}}
 We put in the 6 for the x value

The formula then becomes

{{{2*(6-y)=8}}}

Now do the equation, multiply each factor on the left side by 2:

{{{12-2y=8}}}

Now subtract 12 from borth sides:

{{{-2y=-4}}}

divide out the -2 from both side of the equation: Remember a negative number divided by a negative number is a positive number.

{{{y=2}}}

Answer y = 2