Пошаговое объяснение:
2)
5x+7=x-1
5x-x=-1-7
1x=-8
x=8:1
x=8
4)
2x-7=4x+3
2x-4x=3+7
-2x=10
x=10÷(-2)
x=-5
6)
5x+3=6x+1
5x-6x=1-3
-1x=-2
-2÷(-1)
2
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Verified answer
Ответ:2) x = 1.5
4) x = -5
6) x = 2
Объяснение:
2) 5x - 7 = x-1
5x - x = (-1) + 7
4x = 6
x = 6/4 = 3/2 = 1целая 1/2 = 1.5
4) 2x - 7 = 4x + 3
2x - 4x = 3 + 7
-2x = 10
x = -5
6) 5x + 3 = 6x + 1
5x - 6x = 1 - 3
-x = -2
x = 2
Пошаговое объяснение:
2)
5x+7=x-1
5x-x=-1-7
1x=-8
x=8:1
x=8
4)
2x-7=4x+3
2x-4x=3+7
-2x=10
x=10÷(-2)
x=-5
6)
5x+3=6x+1
5x-6x=1-3
-1x=-2
-2÷(-1)
2