Answer:
Substitution
Step-by-step explanation:
We know that B equals five, and that a + b = c. This means that if we substitute 5 for b, the equation will still be true. Hope this helps!
you substituted b for 5 in the equation
Hope this helped and brainliest plss
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I think its the third one.
Lemme know if it's right!
I hope this helps u! :D