Question

4)Rezolvati ecuatiile:
a) x+2/3=7/3

b)3/7+x=4/7

c)3/7-2/35=x

d) 2 1/5+x-3 1/7

e)7 1/3-x=3 1/7

f)5/12=26/15-x-19/60

g)x-8/3=1/24

Answer 1

a) x+2/3=7/3
3x+2=7
x=5/3

b)3/7+x=4/7
x=4/7-3/7=1/7

c)3/7-2/35=x
(15-2)/35=x
x=13/35

d) 2 1/5+x=3 1/7
11/5+x=22/7
x=22/7-11/5
x=(110-77)/35
x=33/35

e)7 1/3-x=3 1/7
22/3-x=22/7
x=22/3-22/7=(154-66)/21=88/21

f)5/12=26/15-x-19/60
x=26/15-19/60-5/12
x=(104-19-25)/60=60/60=1

g)x-8/3=1/24
x=1/24+8/3=(1+64)/24=65/24