((4^7)/(5^2))^3 I'm pretty sure this is how you would right the problem to begin with
It's closed under addition. You can take any two natural numbers you want, add them up and you'll get some other natural number (eg: 3 and 5 ---> 3+5 = 8)
it's not closed under subtraction. Sure 5-3 = 2 is a natural number but 3-5 = -2 is not a natural number
so that leads us to the answer being choice B
A) Multiplication is done wrong. The + sign with 16 underlined in the term -16m<em><u>+16</u></em>=-16 is wrong. it should be -16.
B) After solving
correctly we get m=0
Step-by-step explanation:
A) Explain his mistake in complete sentences.
Samuel has done the mistake while performing the step:

When we multiply -2 with the terms inside the bracket, we apply the rule that if we have one positive sign (+) and one negative sign (-) while multiplying the result would have negative sign(-) i.e,

While Samuel has calculated as
The + sign with 16 underlined in the term -16m<em><u>+16</u></em>=-16 is wrong. it should be -16.
B) Explain how to solve the equation correctly
Now, solving the given expression:

So, the value of m is m=0
Keywords: Solving Algebraic expressions
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Answer:
<u>Missing statements:</u>
- R2. Definition of corresponding angles
- R3. Corresponding angles postulate
- R5. Supplement Postulate
- S7. m∠2 + m∠3 = m∠1 + m∠3
- S8. m∠1 + m∠3 = 180°