Question

#3-60 Simplify the following expressions.

Answer 1

The solution is:

a. -18

b. -18

c. 24

d. 0

e. -4

4. 4

Explanation:

Before we get into the solution, we remember the formula first, namely:

Addition

• (-) + (-) = (-)

• (+) + (+) = (+)

Subtraction

• (+) - (+) = can (-) and (+)

• (+) - (-) = (+)

Multiplication

• (-) x (-) = (+)

• (+) x (-) = (-)

Division

• (-) : (-) = (+)

• (+) : (-) = (-)

Solution:

a. 6(-3) = -18 ((+) × (-) = (-))

b. -6(3) = -18 ((-) × (+) = (-))

c. (-8)(-3) = 24 ((-) × (-) = (+))

d. -8(0) = 0 (whatever the number, if multiplied by 0 the result is still 0)

e. -20÷5 = -4 ((-) ÷ (+) = (-))

f. -36÷(-9) = 4 ((-) ÷ (-) = (+))