Question

A)0,375×(0,25+1/6)×(0,2+1/3)=
B)[0,(3)+3 (3)]:(0,3+0,2:3)=
C)0,8×(2/3+0,75)+3:(7,5-3)-1/6=

Answer 1

A)0,375×(0,25+1/6)×(0,2+1/3)=
=375/1000 × (25/100+1/6)×(2/10+1/3)=
=3/8 × (1/4+1/6)×(1/5+1/3)=
=3/8 × (3+2)/12×(3+5)/15=
=3/8 × 5/12×8/15=
=3×5×8/8×12×15=
=1/12=0,08(3)


B)[0,(3)+3,(3)]:(0,3+0,2:3)=
=(3/9+30/9):(3/10+2/30)=
=(1/3+10/3):(9+2)/30=
=11/3:11/30=
=11/3 ×30/11==10

C) 0,8×(2/3+0,75)+3:(7,5-3)-1/6=
=8/10×(2/3+75/100)+3:4,5-1/6=
=4/5×(2/3+3/4)+30/45-1/6=
=4/5×(8+9)/12+2/3-1/6=
=4/5×17/12+2/3-1/6=
=17/15+2/3-1/6=
=(34+20-5)/30=
=49/30=
=1,6(3)