Ответ:

7(2x-3)+1=2(7x-10)

14x-21+1=14x-20

-21+1=-20

-20=-20

x ∈ R

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4x-6(3x+8)-5(2x-7)=35

4x-18x-48-10x+35=35

2x-18x-48-10x=0

-24x-48=0

-24x=48

x = -2

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6(2x-5)-4=2

12x-30-4=2

12x-34=2

12x=2+34

12x=36

x = 3

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1x+41=12

x+41=12

x=12-41

x = -29

или

71x+41=12

71x=12-41

71x = -29

x = -29/71

Объяснение: