6 8. (18)/(-6) 2. 5+(-12) 6. -121div (-11) 6. 4(-8)(-5)div (-10)

Let's solve each of the given problems step by step:<br /><br />1. \(\frac{18}{-6}\)<br /> \[<br /> \frac{18}{-6} = -3<br /> \]<br /><br />2. \(5 + (-12)\)<br /> \[<br /> 5 + (-12) = 5 - 12 = -7<br /> \]<br /><br />3. \(-121 \div (-11)\)<br /> \[<br /> -121 \div (-11) = 11<br /> \]<br /><br />4. \(4(-8)(-5) \div (-10)\)<br /> \[<br /> 4(-8)(-5) \div (-10) = 4 \times 8 \times 5 \div 10 = 160 \div 10 = 16<br /> \]<br /><br />So, the answers are:<br />1. \(-3\)<br />2. \(-7\)<br />3. \(11\)<br />4. \(16\)