Question

Решите уравнение:
1)2х+9,8=13,6;
2)10,36-3х=5,86;
3)4,2х-6=3,66;
4)19,5-0,3х=15,9;
5)(7-0,2х)×1,4=7,56;
6)(6,1х-13,2):1,7=3;

Answer 1

1)2x=13.6-9.8
2x=3.8
x=1.9

2)-3x=5.86-10.36
-3x=-4.5
x=-4.5÷(-3)
x=1.5

3)4.2x=3.66+6
4.2x=9.66
x=2.3

4)-0.3x=15.9-19.5
-0.3x=-3.6
x=12

5)9.8-0.28x=7.56
-0.28x=7.56-9.8
-0.28x=-2.24
x=0.6272

6)6.1x-13.2=5.1
6.1x=5.1+13.2
6.1x=18.3
x=3