16+18x=20-x
18x+x=20-16
17x=4
x=4/17
Hola
16 + 18x = 20 - x
18x + x = 20 - 16
19x = 4
4 : 19 = 0.21
X = 0.21
Comprobamos
0.21 x 18 = 3.78
16 + 18x(3.78) = 20 - x(0.21)
16 + 3.78 = 20 - 0.21
19.78 = 19.79
