Write the missing reasons. Assume that each variable represents any real number. Prove: (a + b) + (-b) = a
Proof:
1. a + b is a real number
2. -b is a real number
3. (a + b) + (-b) = a + [b + (-b)]
4. (a + b) + (-b) = a + 0
5. (a + b) + (-b) = a

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what do you need me to answer?

step-by-step explanation:

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

step-by-step explanation:

idk

step-by-step explanation: