А)1/2x+3/4=7/16x-5/8 б)2/3-1/6x=7/12x+5/9 в)1/5x+9/10=1/15-3/10x г)7/18-3/4x=5/6x+4/9 решите
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Ответы на вопрос:
А) 1/2x + 3/4 = 7/16x - 5/8 1/2x - 7/16x = -5/8 - 3/4 | * 16 8x-7x=-10-12 x = -22 б) 2/3 - 1/6x = 7/12x + 5/9 -1/6x - 7/12x = 5/9 - 2/3 | * 36 -6x - 21x = 20 - 24; -27x = 4 x = -4/27 в) 1/5x + 9/10 = 1/15 - 3/10x 1/5x + 3/10x = 1/15 - 9/10 | * 30 6x + 9x = 2 - 27 15 x = -25 x = -25/15 = -1 1/3 г) 7/18 - 3/4x = 5/6x + 4/9 -3/4x - 5/6x = 4/9 - 7/18 | * 36 -27x - 30x = 16 - 14 -57x = -2 x = 2/57
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