Question

3 tính

a)(-18).(55-24)-28.(44-68)

b)(-4).3(-125).25.8

c)(-67).(1.301)-301.67

Answer 1

\(a,\left(-18\right)\left(55-24\right)-28\left(44-68\right)\)

\(=\left(-18\right).31-28.\left(-24\right)=-558-\left(-672\right)=114\)

\(b,\left(-4\right)3\left(-125\right).25.8=\left[\left(-4\right).25\right]\left[\left(-125\right).8\right].3\)

\(=\left(-100\right)\left(-1000\right).3=300000\)

\(c,\left(-67\right)\left(1.301\right)-301.67=301\left(-67-67\right)\)

\(=301.\left(-134\right)=-40334\)