Помогите пожалуйста решить

Ответ:

Пошаговое объяснение:

7y - 39 = 717

7y = 717+39

7y = 756

y = 756:7

y = 108

==============

x + 3x = 76

4x = 76

x = 76:4

x = 19

===========

8x + 14 = 870

8x = 870-14

8x = 856

x = 856:8

x = 107

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(15 - x)*50-36 = 314

(15 - x)*50=314+36

(15 - x)*50 = 350

15 - x = 350:50

15 - x = 7

x = 15 - 7

x = 8

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40*(420:n - 37) = 200

420:n - 37 = 200:40

420:n - 37 = 200:40

420:n - 37 = 5

420:n = 5+37

420:n = 42

n = 420:42

n = 10

==================

(y:8 + 18) * 9 = 540

y:8 + 18 = 540:9

y:8 + 18 = 60

y:8 = 60-18

y:8 = 42

y = 42*8

y = 336

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6095:x * 42 - 4109 - 9394:7:61 = 699

6095:x *42 - 4109 - 22 = 699

6095:x *42 - 4131 = 699

6095:x*42 = 699+4131

6095:x*42 = 4830

6095:x = 4830:42

6095:x = 115

x = 6095 : 115

x = 53