Ответ:
Пошаговое объяснение:
-6(x + 2) = 4x - 17
-6x - 12 = 4x - 17
4x + 6x = 17 - 12
10x = 5
x = 5 : 10
x = 0,5
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(18x - 19) - (4 - 7x) = -73
18x - 19 - 4 + 7x = -73
25x - 23 = -73
25x = -73 + 23
25x = -50
x = -50 : 25
x = -2
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10x + 3(7 - 2x) = 13 + 2x
10x + 21 - 6x = 13 + 2x
4x + 21 = 13 + 2x
4x - 2x = 13 - 21
2x = -8
x = -8 : 2
x = -4
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-3(4 - 5y) + 2(3 - 6y ) = -3,9
-12 + 15y + 6 - 12y = -3,9
-6 + 3y = -3,9
3y = -3,9 + 6
3y = 2,1
y = 2,1 : 3
y = 0,7