Question 477494


{{{w = (1/4)(7x - 10y)}}}...first multiply

{{{w = 7x/4 - 10y/4}}}...add {{{10y/4}}} to both sides

{{{w +10y/4= 7x/4 - 10y/4+10y/4}}}

{{{w +10y/4= 7x/4 - cross(10y/4)+cross(10y/4)}}}

{{{w +10y/4= 7x/4 }}}... both sides multiply by {{{4}}}

{{{4w +4*10y/4= 4*7x/4 }}}

{{{4w +10y= 7x }}}......both sides divide by {{{7}}}


{{{4w/7 +10y/7= x }}}


so, {{{x=4w/7 +10y/7 }}}