Question

Encuentra el valor de x 19x + 21x + 40 = 960

Answer 1

19x + 21x + 40 = 960 40x = 960 - 40 40x = 920 x = 920/40 x = 23

Answer 2

19 x + 21 x + 40 = 960
30 x + 40 = 960
30 x = 960 - 40
30x = 920
----------------
30
x = 30.66

Suerte :)