Question

2)Rezolvati ecuatiile

b)(23-x)/6=3

c)5x(3x-9)=2

d)(23-5x)/9=2

e)24/(5-x)=6

f)32/(133-5x)=4

g)3x-15/3=19=3

h5x-21/=4+13

i)13-14/x=18-7
VA ROG URGENT

Answer 1

Răspuns:

Explicație pas cu pas:

a)

(23-x):6=3 |*6

23-x=18

x=23-18

x=5

b)

5*(3*x-9)=60| :5

3*x-9=12

3*x=12+9

3*x=21

x=7

c)

(23-5*x):9=2 |*9

23-5*x=18

5*x=23-18

5*x=5

x=1

d)

24:(5-x)=6 | *(5-x)

6*(5-x)=24 | :6

5-x=4

x=5-4

x=1

e)

32:(13-5*x)=4

4*(13-5*x)=32 | :4

13-5*x=8

5*x=5

x=1

f)

3*x-15:3=19+3

3*x-5=22

3*x=27

x=9

g)

5*x-21:7=4+13

5*x-3=17

5*x=20

x=4

h)

13-14:x=18-7

14:x=13-18+7

14:x=2

2*x=14

x=7