Question

12 - ( x-1) = 2,4
sa determinam x

Answer 1

$12-(x-1)=2,4 \\ -(x-1)=2,4-12 \\ -(x-1)=-9,6(-1) \\ x-1=9,6 \\ x=9,6+1 \\ x=10,6$

Answer 2

12-(x-1)=2,4
x-1=12-2,4
x-1=9,6
x=9,6+1
x=10,6