Question

Resolva as equacoes 7 (x-3)-2 (x+3)=8

Answer 1

Olá

7(x - 3) - 2(x + 3) = 8
7x - 21 - 2x - 6 = 8
7x - 2x = 8 + 21 + 6             
5x = 35
x = 35/5
x = 7

S = {7}

Answer 2

 7 (x-3)-2 (x+3)=8
 7x - 21 - 2x - 6  =8
   7x - 2x = 8 + 21 + 6
        5x = 35
          x = 7