Insert a digit 1-9 into each box so that each equation is true, and only two different digits are used in each equation. Except for the order of some sums and products, the answers are unique.

A.   =

B.   + = +

C.   + = ×

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D.   = +

E.   × × =

F.   + =

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G.   =

H.   × + =

I.   = ( – )

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J.   ( + ) =

K.   – – = /

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L.   × =

M.   + = ( × )

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N.   × = +

O.   – – = / ( + )

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P.   × ( + ) = ×

Q.   × – =

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R.   × = –

S.   ( + ) = /

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T.   = × – ×

U.   × = × –

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V.   × + = ( × )

W.   = ×

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X.   × = ( – )

Y.   × = ( × – )

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The answers are here.