7х+2х=3.528 14х-6х-0.14=5.5

Question

7х+2х=3.528 14х-6х-0.14=5.5

Answer 1

7х+2х= 3,528
9х= 3,528
х= 3,528:9
х= 0,392

14х-6х-0,14= 5,5
8х= 5,5+0,14
8х=5,64
х= 5,64:8
х= 0,705

Answer 2

9x=3.528:x=3.528\9:x=0,362.