Question 916605

 if one # ({{{x}}}) is {{{5}}} less then {{{2}}} times the other # ({{{y}}})

one # is {{{x+5=2y}}} ...eq.1

if the sum of {{{31}}}, then
{{{x+y=31}}} ....eq.2

solve this system:

{{{x+5=2y}}} ...eq.1
{{{x+y=31}}} ....eq.2
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{{{x+5=2y}}} ...eq.1...solve for {{{y}}}

{{{y=x/2+5/2}}} ...plug in eq.2


{{{x+x/2+5/2=31}}} ....eq.2 ...solve for {{{x}}}

{{{2x+2x/2+2*5/2=2*31}}}

{{{2x+x+5=62}}}

{{{3x=62-5}}}

{{{3x=57}}}

{{{highlight(x=19)}}}

find {{{y}}}


{{{y=x/2+5/2}}}

{{{y=19/2+5/2}}}

{{{y=24/2}}}

{{{highlight(y=12)}}}