Question

Вычислите:

18,45−(−7,6)=

−3 2/5+1 1/15;=

−5,6+(−3,7);=
ППЖПЖАЖЖ СРОЧНОО С РЕШЕНИЕМ.

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Answer 1

$\displaystyle \tt 18,45-(-7,6)=18,45+7,6=26,05$

$\displaystyle \tt -3\frac{2}{5}+1\frac{1}{15}=-\frac{17}{5}+\frac{16}{15}=-\frac{51}{15}+\frac{16}{15}=-\frac{35}{15}=-\frac{7}{3}=-2\frac{1}{3}$

$\displaystyle \tt -5,6+(-3,7)=-5,6-3,7=-9,3$