Question

$28 + \frac{1}{2} a \times 42$
By BODMAS​

Answer 1

Answer:

done✌✌

Explanation:

Example- Solve (12+14)of16

Solution- (12+14)of16

Step 1: Solving the fraction inside the bracket first-

12+14=34

 

Step 2: Now the expression will be 34of16 =

34×16 =12

 

SIMPLIFICATION OF BRACKETS

Simplification of brackets in expression means the expansion of brackets. We can remove brackets from an expression by expanding them by multiplication. We use the distributive law of multiplication over addition or subtraction. Generally, it can be written as:

Notes: The order of brackets to be simplified is (), {}, [].

Example 2: Expand and simplify

Solution:

(i) The terms inside the bracket are like terms. We can solve this by two methods.

Method 1: Add the terms inside the bracket and multiply the number outside bracket with the sum.

Method 2: Multiply the number outside the bracket with each term inside the bracket and add the products.

(ii) Here the terms are unlike terms. This can be simplified by multiplying the number outside the bracket with the terms inside the bracket and add the products.

Step 1: Simplify the terms inside {}.

Step 2: Simplify {} and operate with terms outside the bracket.

1800÷10{(12−6)+(24−12)}

1800÷10{6+12}

⇒1800÷10{18}

= 1800÷10×18

= 180×18

= 3,240

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