Решите уравнения: 1) 0.31х + 1,2 = 1.2124 2)0.5х - 17 = 40.52 3)4,6 - 0.03х =1.3 4)0.4x +...

Question

Решите уравнения:
1) 0.31х + 1,2 = 1.2124
2)0.5х - 17 = 40.52
3)4,6 - 0.03х =1.3
4)0.4x + 0.24x - 0.26 = 0.764

Answer 1

1) 0.31х + 1,2 = 1.2124
0.31x=1.2124-12
0.31x=0.0124
x=0.04

2)0.5х - 17 = 40.52
0.5x=40.52+17
0.5x=57.52
x=57.52/0.5
x=115.04

3)4,6 - 0.03х =1.3
0.03x=-3.3
x=-110

4)0.4x + 0.24x - 0.26 = 0.764
0.64x=0.504
x=