Question

Ex. 8. 120 + 3 of 5 - [7 x 2 {10 - 5 (24 - 10 x 2 +
7+3x10+5)}] = ?​

Answer 1

Answer:

Step-by-step3 1/3 ÷ 5/3 - 1/10 of 2 ½ + 7/4

= (3 × 3 + 1)/3 ÷ 5/3 – 1/10 of (2 × 2 + 1)/2 + 7/4

= 10/3 ÷ 5/3 - 1/10 of 5/2 + 7/4

                     [‘of’ simplified]

= 10/3 × 3/5 – ½ × ½ + 7/4                  [‘÷’ simplified]

= 2/1 - ¼ + 7/4                   [‘×’ simplified]

= (2 × 4)/1 × 4) - (1 × 1)/4 × 1) + (7 × 1)/4 × 1)

= 8/4 - ¼ + 7/4

[Now the denominators are same of all the fractions]

= (8 – 1 + 7)/4                  [‘+’ and ‘-‘ simplified]

= 14/4

= 7/2 explanation:

Answer 2

Step-by-step explanation:

$120 + 3 \times 5 - (7 \times 2(10 - 5(24 - 10 \times 2 + 7 + 3 \times 10 + 5))) \\ = 120 + (3 \times 5) - (7 \times 2(10 - 5(24 - (10 \times 2) + 7 + (3 \times 10) + 5))) \\ = 120 + 15 - (14(5(24 - 20 + 7 + 30 + 5))) \\ = 135 - (14(5(46))) \\ = 135 - (14(5 \times 46)) \\ = 135 - (14(230)) \\ = 135 - (14 \times 230) \\ = 135 - 3220 \\ = \underline{ \underline{ - 3085}}$