Simplify the expression.
7b + 3x − 5b + 21x
Responses
A 2b − 18x2b − 18x
B 2b + 24x2b + 24x
C −2b + −18x−2b + −18x
D −2b + 24x
Please help
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7b + 3x − 5b + 21x
= 7b-5b + 3x+21x
what do you think?