Question

Aflați nr x . Urgent! ​

Answer 1

Explicație pas cu pas:

d) 15+(x+2)=47-21

15+(x+2)=26

x+2=26-15

x+2=11

x=11-2

x=9

e) 2x+37=65

2x=65-37

2x=28

x=28:2

x=14

f) 32+(2x-5)=77

2x-5=77-32

2x-5=45

2x=45+5

2x=50

x=50:2

x=25

Answer 2

Salut!

d)

15 + ( x + 2 ) + 21 = 47

36 + ( x + 2 ) = 47

x + 2 = 47 - 36

x + 2 = 11

x = 11 - 2

x = 9 ✓✓

e)

2 • x + 37 = 79 - 14

2 • x + 37 = 65

2 • x = 65 - 37

2 • x = 28

x = 28 : 2

x = 14 ✓✓

f)

32 + ( 2 • x - 5 ) = 63 + 14

32 + ( 2 • x - 5 ) = 77

2 • x - 5 = 77 - 32

2 • x - 5 = 45

2 • x = 45 + 5

2 • x = 50

x = 50 : 2

x = 25 ✓✓