Question

A)7x+5=68-2x B)14-3x=2x+29


C)8x-9=2x+11 D)10-4x=9-2x


E)2.(7x+2)+12.(x+1)=2

com o cálculo pfvv​

Answer 1

A)7x+5=68-2x

7x+2x=68-5

9x=63

x=63/9

x=7

B)14-3x=2x+29

-3x-2x=29-14

-5x=15 .(-1)

x= -15/5

x= -3

C)8x-9=2x+11

8x-2x=11+9

6x=20

x=20/6 (:2)

x=10/3

D)10-4x=9-2x

-4x+2x=9-10

-2x= -1 . (-1)

x= 1/2

E)2.(7x+2)+12.(x+1)=2

14x+4+12x+12=2

14x+12x=2-4-12

26x= -14

x= -14/26 (:2)

x= -7/13