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Simplify:
(212+3.6)1.9(2\frac{1}{2}+3.6)-1.9

A4.2

B5.2

C6.2

D7.2

Answer:

A. 4.2

Read Explanation:

First convert the mixed number:

212=2.52\frac{1}{2} = 2.5

Now substitute:

(2.5+3.6)1.9(2.5 + 3.6) - 1.9

Step by step:

2.5+3.6=6.12.5 + 3.6 = 6.1
6.11.9=4.26.1 - 1.9 = 4.2

Final answer: (4.2)


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