1) (3х (-2)) х 5;
2) (-9х4) х (-2,5);
3) (13х (-5)) х 20;
4) (-9х15)) х (-2);
5) (-8х (-12)) х 5;
6) (3х (-25)) х 2.
2) (-9х4) х (-2,5);
3) (13х (-5)) х 20;
4) (-9х15)) х (-2);
5) (-8х (-12)) х 5;
6) (3х (-25)) х 2.
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Answers & Comments
1)-30
2)90
3)-1300
4)270
5)480
6)-150