Question

Решите уравнения:

1) 2-5х=х+14
2) 2-0,7х=0,4-0,3х
3) 1,7-0,6х=0,3-0,4х

Answer 1

2-5х=х+14;
-5х-х=-2+14;
-6х=12
х=12:(-6);
х=-2

2-0,7х=0,4-0.3х;
-0.7х+0.3=-2+0.4;
-0.4х=1.6
х=1.6:0,4
х=16:4
х=4

1.7-0.6х=0.3-0.4х
-0.6х+0.4х=0.3-1.7
-0.2х=-1.4
х=-1.4:(-0.2)
х=-14:(-2)
х=7