Ответ:
Пошаговое объяснение:
5/7 (x + 3) = -2(1 - x)
5/7x + 15/7 = -2 + 2x /*7
5x + 15 = -14 + 14x
14x - 5x = 15 + 14
9x = 29
x = 29 : 9
x = 3 2/9
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6(4x - 7) - 3(5 - 8x) = 0
24x - 42 - 15 + 24x = 0
48x - 57 = 0
48x = 57
x = 57 : 48
x = 1 9/48 = 1 3/16
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50 - e - 16 = 3e - 16
34 - e = 3e - 16
3e + e = 34 + 16
4e = 50
e = 50 : 4
e = 12,5