Question 1104513
{{{system(L=26,d=4)}}}


x, how many more years until


{{{L+x=2(d+x)}}}
but their current ages are given already.
{{{26+x=2(4+x)}}}
{{{x+26=2x+8}}}
{{{26-8=x}}}
{{{highlight(x=18)}}}


-
{{{CHECK}}}:
{{{26+18=2(4+18)}}}
{{{44=2*22}}}
{{{44=44}}}