4. Simplify the following:

(a) [tex]4739 + 63 \times 3290 \div 14 - 12698[/tex]

(b) [tex]12276 \div 18 \times 53 + 28956 - 52741[/tex]

(c) [tex]67 \times 43 - 42432 \div -17 + 3615[/tex]

(d) [tex]8930 + 5491 \div 19 \times 35 - 17958[/tex]



Answer :

Sure, let's go through each of these expressions step-by-step, following the order of operations (parentheses, exponents, multiplication and division from left to right, and addition and subtraction from left to right).

### (a) [tex]\( 4739 + 63 \times 3290 \div 14 - 12698 \)[/tex]
1. Start with the multiplication and division:
[tex]\[ 63 \times 3290 = 207270 \][/tex]
[tex]\[ 207270 \div 14 = 14805 \][/tex]
2. Now perform the addition and subtraction from left to right:
[tex]\[ 4739 + 14805 - 12698 \][/tex]
[tex]\[ 4739 + 14805 = 19544 \][/tex]
[tex]\[ 19544 - 12698 = 6846 \][/tex]
So, the simplified result for (a) is [tex]\( 6846 \)[/tex].

### (b) [tex]\( 12276 \div 18 \times 53 + 28956 - 52741 \)[/tex]
1. Start with the division and then multiplication:
[tex]\[ 12276 \div 18 = 682 \][/tex]
[tex]\[ 682 \times 53 = 36146 \][/tex]
2. Now perform the addition and subtraction from left to right:
[tex]\[ 36146 + 28956 - 52741 \][/tex]
[tex]\[ 36146 + 28956 = 65102 \][/tex]
[tex]\[ 65102 - 52741 = 12361 \][/tex]
So, the simplified result for (b) is [tex]\( 12361 \)[/tex].

### (c) [tex]\( 67 \times 43 - 42432 \div -17 + 3615 \)[/tex]
1. Start with the multiplication and division:
[tex]\[ 67 \times 43 = 2881 \][/tex]
[tex]\[ 42432 \div -17 = -2496 \][/tex]
2. Now perform the addition and subtraction from left to right:
[tex]\[ 2881 - (-2496) + 3615 \][/tex]
[tex]\[ 2881 + 2496 = 5377 \][/tex]
[tex]\[ 5377 + 3615 = 8992 \][/tex]
So, the simplified result for (c) is [tex]\( 8992 \)[/tex].

### (d) [tex]\( 8930 + 5491 \div 19 \times 35 - 17958 \)[/tex]
1. Start with the division and multiplication:
[tex]\[ 5491 \div 19 = 289 \][/tex]
[tex]\[ 289 \times 35 = 10115 \][/tex]
2. Now perform the addition and subtraction from left to right:
[tex]\[ 8930 + 10115 - 17958 \][/tex]
[tex]\[ 8930 + 10115 = 19045 \][/tex]
[tex]\[ 19045 - 17958 = 1087 \][/tex]
So, the simplified result for (d) is [tex]\( 1087 \)[/tex].

In summary:
- (a) [tex]\( 6846 \)[/tex]
- (b) [tex]\( 12361 \)[/tex]
- (c) [tex]\( 8992 \)[/tex]
- (d) [tex]\( 1087 \)[/tex]