Question

Quantos e a)2×+6=×+18 b)5×-3=2×+9 )c2×3(+-5)=4×+9​

Answer 1

Resposta:

A) 2x+6=x+182x-x=18-6x=12

B)

5x-3 = 2x+9

5x-2x = 9+3

   3x = 12

     x = 12

          ¨¨¨¨¨¨

            3

      x = 4

C)

2x + 3x - 15 = 4x + 9

5x - 4x = 9 + 15

 

x = 24

 

S = {24}

Espero ter ajudado ;)