a: =-6-124=-130
b: =15/10-2/10-3/10=10/10=1
c: =2/5+3=17/5
a) \(\left(-12\right)\cdot\left(0,5\right)+\left(-124\right)=\left(-6\right)+\left(-124\right)=-130\)
b) \(\dfrac{3}{2}+\dfrac{-1}{5}-\dfrac{3}{10}=\dfrac{13}{10}-\dfrac{3}{10}=\dfrac{10}{10}=1\)
c) \(0,4-\dfrac{1}{3}\cdot\left(-9\right)=\dfrac{2}{5}-\dfrac{1}{3}\cdot\left(-9\right)=\dfrac{2}{5}-\left(-3\right)=\dfrac{17}{5}\)
Số thập phân \(=3,4\)
a: =-6-124=-130
b: =15/10-2/10-3/10=10/10=1
c: =2/5+3=17/5