Question

a=5,25+3supra2 +4,5*3 supra 6

Answer 1

$a = 5.25 + \frac{3}{2} + 4.5 + \frac{3}{6} = \frac{21}{4} + \frac{3}{2} + \frac{9}{2} + \frac{3}{4} = 12 \\ a = 12$
sper ca e corect !!!