Question

rezolvați ecuațiile:

a) 5y-97=943

b)410-7y=151

c) (82+y):6=17

d) (y-33):9=305

f) 5(y-2)+3=38

g) 9+2 (14-y)=15

Answer 1

a)5y-97=943
5y=943+97
5y=1040
y=1040:5
y=208

b)410-7y=151
7y=410-151
7y=259
y=259:7
y=37

c)(82+y):6=17
82+y=6x17
82+y=102
y=102-82
y=20

d)(y-33):9=305
y-33=305x9
y-33=2745
y=2745+33
y=2778

f)5(y-2)+3=38
5(y-2)=38-3=35
y-2=35:5
y-2=7
y=7+2
y=9

g)9+2(14-y)=15
2(14-y)=15-9=6
14-y=6:2=3
14-y=3
y=14-3
y=11