Question

1/2 + 2 x ( 0,25 + 3 )

Answer 1

1/2+2x(1/4+3)=1/2+2*1/4+6=1/2+1/2+6=7
(0.25=25/100=1/4)

Answer 2

1/2+2 x (0,25+3)= 1/2+ 2 x (25/100+3)
SE SIMPLFICA FRACTIA 25/100 CU 25=>
1/2+2 x (1/4 +3/1)
SE AMPLIFICA PRIMA FR 1/4 CU 3 SI 3/1 CU 12 =>
1/2+2 X ( 3/12+ 26/12)
1/2 + 2 X 29/12 
SE SIMPLIFICA 2 SI 12 CU 2 =>
1/2 + 29/6
SE AMPLIFICA FR 1/2 CU 3 
3/6+ 29/6= 31/6