a)x=1-2/3=3/3-2/3=1/3
b)x=5/2:2=5/2:2/1=5/2*1/2=5/4
e) x+1/4=0,75
x=0,75-1/4=0,75-0,25=0,50=0,5
f)7/2-x=3,5
3,5-x=3,5
3,5-3,5=x
0=x
x=0
i)0,25+x=0,(6)
25/100+x=6/9
1/4+x=2/3
x=2/3-1/4=8/12-3/12=5/12
j)0,4x=0,75
x=0,75/0,4
x=7,5/4
x=75/40
x=15/8=1,875
