Question

ME AJUDEEM
Resolva as equações;
3(x+4) +2 (x+2) = 41
5(x+2) +2 (x+3) = 23
5x-2 (3-x) =6 (12-2x)

Answer 1

a)

3.(x + 4) +2.(x + 2) = 41
3x + 12 + 2x + 4 = 41
5x + 16 = 41
5x = 41 - 16
5x = 25
x = 25/5
x = 5
--------------------------------------------
b)
5.(x + 2) + 2.(x + 3) = 23
5x + 10 + 2x + 6 = 23
7x + 16 = 23
7x = 23 - 16
7x = 7
x = 7/7
x = 1
-------------------------------------------------
c)
5x - 2.(3 - x) = 6.(12 - 2x)
5x - 6 + 2x = 72 - 12x
7x - 6 = 72 - 12x
7x + 12x = 72 + 6
19x = 78
x = 78
      19

Answer 2

Resposta5x - 2.(3 - x) = 6.(12 - 2x)

5x - 6 + 2x = 72 - 12x

7x - 6 = 72 - 12x

7x + 12x = 72 + 6

19x = 78

x = 78

19

Explicação passo-a-passo: