Question

прошу)помогите)плизз​

Answer 1

$frac{10t(5t - 2)}{20t} + frac{7u + 3}{2} = frac{5t - 2}{2} + frac{7u + 3}{2} = frac{5t - 2 + 7u + 3}{2} = frac{5(0.1) - 2 + 7(-5) + 3}{2} = -16.75$