Question

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Answer 1

A. -13.11.

Explanation:

18.03 - 3(12.7 + 8.06) / 2

Work out the parentheses firt:

= 18.03 - 3* 20.76 / 2

Now the multiplication:

= 18.03 - 62.28/ 2

Now the division;

= 18.03 - 31.14

= -13.11.

Answer 2

A. -13.11

Explanation:

18.03-3(12.7 + 20.76 / 2

add the numbers

18.03 - 3 x 20.76 / 2

Use rules of multiplication and division to calculate the expression

-3 x 20.76 / 2

multiply the numbers

-62.28 / 2

divide the numbers

-31.14

18.03 - 31.14

calculate the difference

-13.11

Answer is -13.11