Determine if each expression is equivalent to - 2.7 + (-4.9)

a - 2.7 - 4.9

b - 2.7 + (-0.4 - 4.5)

c - 2.7 + 0.4 - 4.5

d - 2.7 + (-0.7 + (4.2)

e - 2.7 - 0.7 + 4.2

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