Question: How to solve this in terms of t

it solve result in numeric but not in terms of t, why and where is t?

restart;

equation1 := subs(x=0.5,-(t*x+(1-t)*x+2*x)/(t*y+(1-t)*y+2*y)) –(1-exp(y)) = 0;

equation1fixedx := solve(equation1, {y});

restart;

equation1 := subs(y=-0.1,-(t*x+(1-t)*x+2*x)/(t*y+(1-t)*y+2*y)) –(x+0.08) = 0;

equation1fixedy := solve(equation1, {x});

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