Question

$x - \frac{10}{100} = 2$

Answer 1

x=2+10/100=> 100x/100=200+10/100=> 100x=210=> x=210/100=> x=2,1

Answer 2

x-(10/100) = 2
(100x - 10) / 100 = 2
100x - 10 = 200
100x = 200 + 10
x = 210/100
x = 2,1