Question

resposta da conta 19 2x-13=10-20

Answer 1

19. ( 2 x - 13) = 10 - 20
28 x - 247  =  10 - 20
28 x  = 10 - 20 + 247
28 x = 237
     x = 237/8
     x = 29,62

    

Answer 2

19 + 2x -13 = 10 - 20
2x = 10 -20 -19 + 13
2x = -16
x = $\frac{-16}{2}$

x = -8