Solve 1万 1万+1万=2万

Evaluate

1 \times Wan \times 1 \times Wan + 1 \times Wan = 2 Wan

Simplify

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W^{2} a^{2} n^{2} + Wan = 2 Wan

Rewrite the expression

a^{2} n^{2} W^{2} + anW = 2 anW

Move the expression to the left side

a^{2} n^{2} W^{2} + anW - 2 anW = 0

Subtract the terms

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a^{2} n^{2} W^{2} - anW = 0

Factor the expression

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anW (anW - 1) = 0

When the product of factors equals 0,at least one factor is 0

anW = 0 anW - 1 = 0

Solve the equation for W

W = 0 anW - 1 = 0

Solution

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W = 0 W = \frac{1}{an}