Question

1) 5/12 a + 7 при а =4

Answer 1

$frac{5}{12}a+7= frac{5}{12}*4+7= frac{5}{3}+7= 1frac{2}{3}+7= 8frac{2}{3}$

Answer 2

5/12*4/1+7=
=5/3+7=
=1 2/3+7=
=8 2/3