Question 118274

{{{8r/5 - 2 = 3r/10 + 8}}}........first move {{{-2}}} to the right and {{{3r/10}}} to the left



{{{8r/5 - 3r/10 = 8 + 2 }}}........common denominator for {{{5}}} and {{{10}}} is {{{10}}}


{{{2*8r/10 - 3r/10 = 10 }}}........


{{{16r/10 - 3r/10 = 10 }}}........


{{{13r/10 = 10 }}}...........multiply by {{{10}}}


{{{10(13r)/10 = 10*10 }}}...........simplify


{{{cross(10)(13r)/cross(10) = 10*10 }}}...........


{{{13r = 100 }}}...........


{{{r = 100/13 }}}...........


{{{r = 7.69}}}...........