Question 409584


{{{(1/7)y+3=(1/2)y}}}....if you have this, then

{{{(1/7)y+3=(1/2)y}}}.......add {{{-(1/2)y}}} to both sides

{{{(1/7)y -(1/2)y +3 =(1/2)y -(1/2)y}}}

{{{(1/7)y -(1/2)y +3 =cross((1/2)y) -cross((1/2)y)}}}

{{{(1/7)y -(1/2)y +3 =0}}}.....add {{{-3}}} to both sides


{{{(1/7)y -(1/2)y +3 -3 =0-3}}}

{{{(1/7)y -(1/2)y +cross(3)-cross(3) =-3}}}

{{{(1/7)y -(1/2)y  =-3}}}......LCD for left side is {{{14}}}, so multiply both sides by {{{14}}}}

{{{14(1/7)y -14(1/2)y  =-3*14}}}

{{{cross(14)2(1/cross(7))y -cross(14)7(1/cross(2))y  =-42}}}

{{{2y -7y  =-42}}}

{{{ -5y  =-42}}}

{{{ y  =-42/-5}}}


{{{ y  = 8.4}}}