Question

va rog ajutor urgent ​

Answer 1

Răspuns:

a. 2x=12+18

2x=30

x=30:2

x=15

b. 18-3x=27

18-27=3x

-9=3x

x= -9:3

x= -3

c. 27-x=25

27-25=x

x=2

d. 27x-27=13-4

27x=27+9

27x=36

x=36:27

x=1.3

e. 8x+16-6=x-1

8x-x=6-16-1

7x=-11

x= -11:7

x= -1.57

f. 18-4x-4=2

18-4-2=4x

12=4x

x=12:4

x=3

g. 26-4x+2=24

26+2-24=4x

4=4x

x=4:4

x=1

Explicație pas cu pas: