4x-1=2(x 0.3) 4x-1=2x 0.6 4x-2x=1 0.6 2x=1.6 x=1.6/2 x=0.8

Question

4x-1=2(x 0.3)
4x-1=2x 0.6
4x-2x=1 0.6
2x=1.6
x=1.6/2
x=0.8

Answer 1

4x-1=2(x 0.3)

4х-1=0,6х

4х-0,6х=1

3,4х=1

х=1:3,4

х=5/17

 

Проверка:

4*5/17-1=2(0,3*5/17)

20/17-1==3/17

3/17=3/17