Ответ:
См. объяснение( 1) x=4; 2) x=2.5 3) x=3 )
Пошаговое объяснение:
1) 4x - 1 = 2x +7
2x = 8
x = 4
2) 8x - 10 = 2*2x
8x - 4x = 10
4x = 10
x = 2.5
3) (x-1) + (5x - 6) = x + (x-2) + (2x + 1)
6x - 7 = 4x - 1
2x = 6
x = 3
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Ответ:
См. объяснение( 1) x=4; 2) x=2.5 3) x=3 )
Пошаговое объяснение:
1) 4x - 1 = 2x +7
2x = 8
x = 4
2) 8x - 10 = 2*2x
8x - 4x = 10
4x = 10
x = 2.5
3) (x-1) + (5x - 6) = x + (x-2) + (2x + 1)
6x - 7 = 4x - 1
2x = 6
x = 3