Ответы на вопрос:
1. 4х-3 1/4= 3/4х + 3 1/24х-3/4х=3 1/2+3 1/43 4/4х-3/4х=3 2/4+3 1/43 1/4х=3 3/4х=3 3/4: 3 1/4х=15/4*4/13х=15/13х=1 2/132. 1/7*(х--1)=1/7*(х+2) 1/4х-14/7-х+1=1/7х+2/71/4х-4/4х-2+1-1/7х=2/7 -3/4х-1-1/7х=2/7-21/28х-4/28х=2/7+1 -25/28х=1 2/7 х=9/7: (-25/28) х=-9*28/7*25 х=-36/25 х=- 1 11/25 3. а- 5/8а-3= 1/4а3/8а-1/4а=3 3/8а-2/8а=3 1/8а=3 а=3: 1/8 а=3*8 а=24
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