Question

разберите по действиям

Answer 1

1,2 - (х-1/4) = 1/2
Х-1/4 = 1,2 - 1/2
Х-1/4 = 1 2/10 - 1/2
Х- 1/4 = 1 2/10 - 5/10
Х-1/4 = 12/10-5/10
Х-1/4 = 7/10
Х= 7/10 + 1/4
Х= 14/20 + 5/20
Х= 19/20
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1,2 - (19/20 - 1/4) = 1/2
1,2 -(19/20 - 5/20) = 1/2
1 2/10 - 14/20 = 1/2
12/10 - 14/20 = 1/2
24/20 - 14/20 = 1/2
10/20 = 1/2
1/2 = 1/2