Question

30+4x=6x-40 ecuaciones

Answer 1

30+4x= 6x -40
4x -6x = -40 -30
-2x = -70
x = -70 : -2
x = 35

comprobante

30+ 4.35 =
30 + 140= 170


6x35 -40 =
210 -40 = 170