Решите уравнения:
-5х+19-12х+15=0
25х-74х-156+10х=0
3х-25х+3+2х=-137
-28-3х-4х+15=36
-5х+19-12х+15=0
25х-74х-156+10х=0
3х-25х+3+2х=-137
-28-3х-4х+15=36
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Answers & Comments
1) -5х + 19 - 12х + 15 = 0
-17х = -15 - 19
-17х = -34
х = 2
Ответ: 2
2) 25х - 74х - 156 + 10х = 0
-39х = 156
х = -4
Ответ: -4
3) 3х - 25х + 3 + 2х = -137
-20х = -140
х = 7
Ответ: 7
4) -28 - 3х - 4х + 15 = 36
-7х = 36 + 28 - 15
-7х = 49
х = -7
Ответ: -7