Question

urgenteeee
socorro!!!!​

Answer 1

Resposta:

a) x(x+4)+x(x+2)=2 +12

+4x+ +2x=2 +12

2+6x=2 +12

2 -2 +6x=12

6x=12

x=

x=2

b)3(2x-3)+2=3x+18

6x-9+2x+2=3x+18

8x-7=3x+18

8x-3x=18+7

5x=25

x= 25 dividido por 5

x=5

c) x-(2x-1)=23

x-2x+1=23

-x+1=23

-x=23-1

-x=22

x=-22

d) 2x-(x-1)=5-(x-3)

2x-x+1=5-x+3

2x-x+x=-5+3-1

2x=7

x= 7

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