After simplifying, which expressions are equivalent? Select three options.

Combine like terms in each expression. A becomes (3.4 + 2.5)a + (−1.7 − 3.9)b = 5.9a − 5.6b. C also becomes (1 + 4.9)a + (−3.9 − 1.7)b = 5.9a − 5.6b, and E is already in that form. B has a positive 5.6b term, while D simplifies to −5.9a + 5.6b, so neither matches.

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