Yes! The absorbances add.
A1 = e1c1l1 = 4200 X 3.00X10-4 X 1 = 1.26
A2 = e2c2l2 = 2800 X 2.60X10-4 X 1 = 0.73
A = 1.26 + 0.73 = 1.99

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