Question 1147887
{{{system(u-t=1,cross(10t+u=5(t+u)),10t+u=5(t+u)+1)}}}

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{{{10t+t+1=5(t+t+1)+1}}}
{{{11t+1=5(2t+1)+1}}}
{{{11t+1=10t+5+1}}}
{{{11t=10t+5}}}
{{{t=5}}},{{{then}}}{{{u=6}}}



56




{{{corrected}}}