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If 1/6! - 1/7! = x/7! ,then the value of 'x' is ? |
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Answer» 1/6!-1/7!=x/7!SIMPLE SUBSTRACT them in LEFT hand side (7!-6!)/6!7!=x/7!so, 7! are vanish from both side(7×6!-6!)/6!=x because, 7!=1×2×3×4×5×6×7 =(1×2×3×4×5×6)×7 =6!×7so, 6!(7-1)/6!=xsimply, x=6 |
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