-8(3+Х)+Х=4 -6=-9(7+Х)+4Х

Question

-8(3+Х)+Х=4
-6=-9(7+Х)+4Х

Answer 1

Вот подробное решение)

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Answer 2

1) - 8(3 + x) + x = 4
- 24 - 8x + x = 4
- 7x = 4 + 24
- 7x = 28
x = - 4
2) - 6 = - 9(7 + x) + 4x
- 6 = - 63 - 9x + 4x
9x - 4x = - 63 + 6
5x = - 57
x = - 11,4