(уравнение)3x=50,7x=-2-2,1x=3,6

Question

(уравнение)
3x=5
0,7x=-2
-2,1x=3,6

Answer 1

1)x=5/3

2)x=-2/0.7 x=-20/7

3)x=-3.6/2.1=-36/21=-12/7

 

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Answer 2

x=5:3                          x=-2:0.7                            x=3.6:2.1

x=5|3                          x=-20:7                              x=36:21

x=1,66                   x=-2,86                            x=1,71