1. 4,5+2x(3,6-0,16/0,1)=
=4,5+2x(3,6-1,6)
=4,5+2x2
=4,5+4
=8,5
17
2. ( 100+2,33)/5=
=(0,17+2,33)/5=
=2,50/5
=0,5
3. 3 100
( 100/0,01-2) /0,25=
100
=(0,03/0,01-2) /0,25=
100
=(3-2) /0,25=
100
=1 /0,25
=1/0,25
=0,4
4.M=a+b+c+d
2,5=a+b+c+d
M=b+c+d
3,2=b+c+d
a+b+c+d=2,5*4
a+b+c+d=10
b+c+d=3,2*3
b+c+d=9,6
a=(a+b+c+d)-(b+c+d)
a=10-9,6
a=0,4
5. [(4x+6):0,6+10]:10+3=11,3
[(4x+6):0,6+10]:10=11,3-3=8,3
(4x+6):0,6+10=8,3*10=83
(4x+6):0,6=83-10=73
4x+6=73*0,6=43,8
4x=37,8
x=37,8:4
x=9,45
PS:
*=INMULTIRE
/=IMPARTIRE