Ответ:
Пошаговое объяснение:
3x + 5 + (x + 5) = (1 - x) + 4
3x + 5 + x + 5 = 1 - x + 4
4x + 10 = 5 - x
4x + x = 5 - 10
5x = -5
x = -5 : 5
x = -1
======================
10(2 - x) + 11x = -3x
20 - 10x + 11x = -3x
20 + x = -3x
x + 3x = -20
4x = -20
x = -20 : 4
x = -5
============================
3x - 2(3x + 4) = 10
3x - 6x - 8 = 10
-3x - 8 = 10
-3x = 10+8
-3x = 18
x = -18 : 3
x = -6
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Answers & Comments
Ответ:
Пошаговое объяснение:
3x + 5 + (x + 5) = (1 - x) + 4
3x + 5 + x + 5 = 1 - x + 4
4x + 10 = 5 - x
4x + x = 5 - 10
5x = -5
x = -5 : 5
x = -1
======================
10(2 - x) + 11x = -3x
20 - 10x + 11x = -3x
20 + x = -3x
x + 3x = -20
4x = -20
x = -20 : 4
x = -5
============================
3x - 2(3x + 4) = 10
3x - 6x - 8 = 10
-3x - 8 = 10
-3x = 10+8
-3x = 18
x = -18 : 3
x = -6