Question

como resolver essa equação 13x - 1 < 9x +1

Answer 1

13x-1<9x+1 = 13x<9x+1+1= 13x-9x<2= 4x<2= x<(2:4)= x<(1:2)

Answer 2

13x - 9x <  1 + 1
4x < 2
x < 2/4
x < 1/2