Question

rezolvați:

2x+ 1 =2001
10 + 5x = 200
2x +7 = 201
120 - 5x =30
14 x -28 = 140
3x -9 = 18
120 +5x = 2000
x +5 = 5 ​

Answer 1

Răspuns:

2x+1=2001

2x=2001-1=2000

X=2000:2

X=1000

10+5x=200

5x=200-10=190

X=190:5

X=38

2x+7=201

2x=201-7=194

X=194:2

X=97

120-5x=30

5x=30+120=150

X=150:5

X=30

14x-28=140

14x=140+28=168

X=168:14

X=12

3x-9=18

3x=18+9=27

X=27:3

X=9

120+5x=2000

5x=2000-120=1880

X=1880:5

X=376

X+5=5

X=5-5

X=0

COROANA TE ROG?

Answer 2

a) 2x+1=2001

2x=2001-1

2x=2000

x=2000:2

x=1000

b)10+5x=200

5x=200-10

5x=190

x=190:5

x=38

c)2x+7=201

2x=201-7

2x=194

x=194:2

x=97

d)120-5x=30

5x=120-30

5x=90

x=90:5

x=18

e)14x-28=140

14x=140+28

14x=168

x=168:14

x=12

f)3x-9=18

3x=9+18

3x=27

x=27:3

x=9

g)120+5x=2000

5x=2000-120

5x=1820

x=1820:5

x=364

h)x+5=5

x=5-5

x=0