Question 41

Simplify: $$25 + 15 - 5 \times \frac{1}{2}  of  10 - [50 \div 10 - 5]$$

Solution

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$$25 + 15 - 5\times \frac{1}{2} of 10 - [50 \div 10 - 5]$$

Apply bodmass rule , before solve bracket

$$25 + 15 - 5\times \frac{1}{2} of 10 - [5- 5]$$

$$25 + 15 - 5\times \frac{1}{2} of 10 - 0$$

$$25 + 15 - 5\times 5 $$

$$25 + 15 - 25 $$

15

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