20-3x=2x-452,7+1,9x=2x+1,5

Question

20-3x=2x-45
2,7+1,9x=2x+1,5

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Answer 1

20-3х=2х-45                2,7+1,9х=2х+1,5

20+45=2х+3х               2,7-1,5=2х-1,9х

65=5х                            1,2=0,1х

х=65:5                            х=1,2:0,1

х=13                                х=12

а на фото что имено