Question

Use the subtraction rule to rewrite the subtraction expression as an equivalent addition expression. Then evaluate the expression. $$ -2.4-3 $$

Short answer

The equivalent addition expression for \( -2.4 - 3 \) is \( -2.4 + (-3) \) and the evaluated answer is -5.4.

Step-by-step solution

Rewrite the subtraction expression as an equivalent addition expression

Use the subtraction rule to rewrite \( -2.4 - 3 \) as \( -2.4 + (-3) \). The rule is based on understanding that subtracting a number is the same as adding its negative.

Evaluate the expression

Now, simply add the numbers. When you add a negative number, you are essentially moving to the left on the number line. So, -2.4 to the left another 3 units gives -5.4