Question

1)Calcule

a) 3.(x+2)+5=x+12=

b) x+4.(x-4)=9-2.(x+3)

Answer 1

Explicação passo-a-passo:

a)

3.(x+2)+5=x+12

3x+6+5=x+12

3x+11=x+12

3x-x=12-11

2x=1

x=1/2

b)

x+4.(x-4)=9-2.(x+3)

x+4x-16=9-2x-6

5x-16=-2x+3

5x+2x=3+16

7x=19

x=19/7

Espero ter ajudado!

Answer 2

Resposta:

3(x+2)+5=x+12=

3x+6+5=x+12

3x-x=12-6-5

2x=1 x=1/2

x+4(x-4)=9-2(x+3)

x+4x-16=9-2x-6

5x-2x=9-6+16

3x=19

x=19/3