1)5 11/14x- 8/15= 5/21 2)7 3/10+25/28x= 8 13/35 - вопрос №3496779151114815521273102528813353313112011415438 от dashasapleva6 21.12.2021 18:37

Question

Математика: 1)5 11/14x- 8/15= 5/21 2)7 3/10+25/28x= 8 13/35 3)3 1/3- 1 1/20x=1 14/15 4)3/8x+7/12x- 5/6x=9/32

dashasapleva6 · Answer

5  11/14x - 8/15 = 5/215  11/14x = 5/21 + 8/155  11/14x = 25/105 + 56/1055  11/14x = 81/105x=81/105 : 5  11/14xx=81/105 : 81/14x=81/105 * 14/81x=14/105x=14/1057 3/10 + 25/28x=8  13/3573/10 + 25/28x=293/3525/28x=293/35 - 73/1025/28x=586/70 -  511/7025/28x=75/70x=75/70 : 25/28x=75/70 * 28/25 x=84/70x=1.23  1/3 - 1 1/20x = 1  14/1510/3 -21/20 = 29/15-21/20x=29/15-10/3-21/20x=29/15 - 50/15-21/20x=- 21/1521/20x=21/15x=21/15 : 21/20x=21/15 * 20/21x=20/15x=4/3x=1  1/33/8x+7/12x-5/6x=9/323/8x+7/12-10/12x=9/323/8x-3/12x=9/329/24x-6/24x=9/323/24x=9/321/7x=9/32x=9/32:1/7x=9/32...