Ответы на вопрос:
9х+15=6 9х+15=-6
9х=6-15 9х=-6-15
9х= -9 9х= -21
х= -1 х= -21/9= -2 1/3
8х-6=14 8х-6=-14
8х=14+6 8х=-14+6
8х=20 8х=-8
х=20/8 х=-8/8=-1
Пошаговое объяснение:
1/5*5=5/5=1
1 1/14*7/15= 15/14*7/15 = 15*7/14*15 = 7/14 = 1/2 =0,5
2 1/4 *3 =9/4*3 = 3*9/4 = 27/4 = 6 1/4
2/3* 3/7 = 2*3/3*7 = 2/7
6 * 1 1/2 = 6*3/2 = 9
1 1/3* 1 1/2 = 4/3*3/2 = 4*3/3*2 = 2
2 2/3* 1 2/3 = 8/3*5/3 = 8*5/3*3 = 40/9 =4 4/9
6 * 2/15 = 12/15
1 1/14*7/15= 15/14*7/15 = 15*7/14*15 = 7/14 = 1/2 =0,5
2 1/4 *3 =9/4*3 = 3*9/4 = 27/4 = 6 1/4
2/3* 3/7 = 2*3/3*7 = 2/7
6 * 1 1/2 = 6*3/2 = 9
1 1/3* 1 1/2 = 4/3*3/2 = 4*3/3*2 = 2
2 2/3* 1 2/3 = 8/3*5/3 = 8*5/3*3 = 40/9 =4 4/9
6 * 2/15 = 12/15
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