Question

Прощу решите срочно надо ​

Answer 1

$\frac{t^{2} +6t}{6} - \frac{2t+3}{2} = 12$

$\frac{t^{2} +6t}{6} - \frac{6t+9}{6} = 12$

$\frac{t^{2} +6t-6t-9}{6} } = 12$

$\frac{t^{2} -9}{6} } = 12$

${t^{2} -9} } = 12*6$

t² = 72 + 9

t² = 81

t = 9