Question

1/3 (5a-7)- 1/2 (6b+7), при a= 2 1/4; b= 2/3
Помогите пожалуйста соч!!!

Answer 1

=
$frac{5}{3} a - frac{35}{6} - 3b \ frac{5}{3} times frac{21}{4} - frac{35}{6} - 3 times frac{2}{3} = frac{35}{4} - frac{35}{6} - 2 = frac{11}{12}$