-2,3x*4 9y*(-3) 5.2x*(-2) -4.1x*(-5)

Question

-2,3x*4
9y*(-3)
5.2x*(-2)
-4.1x*(-5)

Answer 1

1) -2,3x×4=-9,2x;
2) 9y×(-3)=-27y;
3) 5,2x×(-2)=-10,4x;
4) -4,1x×(-5)=20,5x.

Comments

можно еще 2/3y*5;-3/5y*15

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1)2/3у×5=10/3у=3 целых 1/3

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2)-3/5у×15=-45/5у=-9у.