Răspuns :
a)x=8/7-1/7
8-1/7
x=7/7
x=1
b)x=5/3+1/3
x=5+1/3
x=6/3
x=2
c)x=7/6-1/6
x=7-1/6
x=6/6
x=1
d)1/4+2x=3/4
2x=3/4-1/4
2x=3-1/4
2x=2/4
2x=1 /2
x=1/4
e)3/8-3x=5/4
-3=5/4-3/8
-3=10-3/8
x=7/8
x=-7/24
f)5/9-5x=4/9
-5=4/9-5/9
-5 x=4-5/9
-5x=-1/9
x=1 /45
8-1/7
x=7/7
x=1
b)x=5/3+1/3
x=5+1/3
x=6/3
x=2
c)x=7/6-1/6
x=7-1/6
x=6/6
x=1
d)1/4+2x=3/4
2x=3/4-1/4
2x=3-1/4
2x=2/4
2x=1 /2
x=1/4
e)3/8-3x=5/4
-3=5/4-3/8
-3=10-3/8
x=7/8
x=-7/24
f)5/9-5x=4/9
-5=4/9-5/9
-5 x=4-5/9
-5x=-1/9
x=1 /45