CHERYL S. answered 02/06/20
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Math for all ages; K-8 All Subjects; Algebra; Geometry; SAT/ACT Prep
Yvette,
b + 2a = 2a +b due to the commutative property of addition.
Since b + 2a = 2a +b, and we are given that 2a + b = 10, then c = 10 also.