860 : (b - 83) = 14 (806 - х) : 130 = 4
b - 83 = 860 : 14 806 - х = 4 · 130
b - 83 = 430/7 806 - х = 520
b - 83 = 61 3/7 х = 806 - 520
b = 61 3/7 + 83 х = 286
b = 144 целых 3/7
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860 : (b - 83) = 14 (806 - х) : 130 = 4
b - 83 = 860 : 14 806 - х = 4 · 130
b - 83 = 430/7 806 - х = 520
b - 83 = 61 3/7 х = 806 - 520
b = 61 3/7 + 83 х = 286
b = 144 целых 3/7