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28.01 Recopier et compléter.
a. 4 x (...+5) = 4x + ...
b. 3x(y + ...) = ... +18
c. 5x(z + ...) = ... +5t
d. 2x(u - ...) = ... -16
e. 8(2v - ...) = ... -8
f. w... -5) = W2 - ...

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