Question

Aflati x din ecuatiile:
a)x+2/5=3/2
b)x-3/4=2/3
c)7/8=x-3/2
d)10/3-x=1/9
e)2/7·x=3/2
f)x·5/7=1/2
g)x:3/7=1/6
h)6/11:x=3/22
i)4/11=x:11/3

Answer 1

a) X+2/5=3/2 |×10
10X+4=15
10X=15-4
10X=11
X=11/10
X=1,1

b) X-3/4=2/3 |×12
12X-9=8
12X=8+9
X=17/12

c)7/8=X-3/2 |×8
8X-12=7
8X=7+12
X=19/8

d) 10/3-X=1/9 |×9
30-9X=1
9X=30-1
9X=29
X=29/9

e) 2/7×X=3/2
2X×2=21
4X=21
X=21/4
f) X×5/7=1/2
5X×2=7
10X=7
X=7/10
g) X:3/7=1/6
X×7/3=1/6
7X×6=3
42X=3
X=3/42
h) 6/11:X=3/22
6/11×1/X=3/22
3×11X=22×6
33X=132
X=132/33
i) 4/11=X:11/3
4/11=X×3/11
3X×11=4×11
3X=4
X=4/3