Question

galera me a judem em duas expresoēs que são 3.(5+3x)+5.(-x-1)=22 é 2.(9x-4)-7+(6-5x).3=18

Answer 1

15+8x-5x-5=22                                                                                     

3x=12                  x=4



18x-8-7+18-15x =18

   3x=15       x=5                                                                                    
                                                                                                       

Answer 2

Boa noite

a)

3*(5 + 3x) + 5*(-x - 1) = 22

15 + 9x - 5x - 5 = 22
4x = 22 - 10 = 12
x = 12/4

x = 3

b)

2*(9x - 4) - 7 + 3*(6 - 5x) =18
18x - 8 - 7 + 18 - 15x = 18
18x - 15x = 15 
3x = 15

x = 5