### Home > AC > Chapter 2 > Lesson 2.1.4 > Problem2-43

2-43.

Without a calculator, compute the value of each expression below.

1. $−3+6$

$3$

1. $(−2)(−9)$

Keep track of negative signs.

1. $−4−9−11$

Change all the subtraction to addition. $−4+(−9)+(−11)$

$−24$

1. $−12−18$

Follow the steps in part (c).

1. $\frac{3}{4}(−8)$

It might be helpful to change $−8$ to a fraction.

Remember to reduce.

1. $(−2)(−2)(2)$

Keep track of negative signs.

1. $7+(−19)$

If the larger number is negative the answer will be negative.

1. $−15\div15$

Turn the problem into a fraction.

Any number divided by itself $=1$.