Question

va rog mult ajutatima imi trebuie si calcule nu doar rezultatul.
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Answer 1

3(x+2)-5=13

3(x+2)=13+5

3(x+2)=18

x+2=18:3

x+2=6

x=6-2

x=4

54:x=3

54=3·x

54:3=x

18=x

x=18

116-4x=80

-4x=80-116

-4x=-36

x=-36: (-4)

x=9

156:(2x+1)=52

156=52(2x+1)

156=104x+52

156-52=104x

104x=104

x=1

Answer 2

Răspuns:

3 • ( x + 2 ) - 5 = 13

3 • ( x + 2 ) = 13 + 5

3 • ( x + 2 ) = 18

x + 2 = 18 : 3

x + 2 = 6

x = 6 - 2

x = 4

54 : x = 3

x = 54 : 3

x = 18

116 - 4x = 80

116 - 80 = 4x

36 = 4x

x = 36 : 4

x = 9

156 : ( 2x + 1 ) = 52

156 : 52 = 2x + 1

3 = 2x + 1

3 - 1 = 2x

2 = 2x

x = 2 : 2

x = 1