Question

I knew the answer..of this question​

Answer 1

Answer:

Step-by-step explanation:

Given that,

( 2 / 5 )× ( - 3 / 5 ) - ( 1 / 6) × ( 3 / 2) + ( 1 / 14 ) × ( 2 / 5 )

= ( 2 × -3 / 5 × 5 ) - ( 1 × 3 / 6 × 2 ) + ( 1 × 2 / 14 × 5 )

= ( -6 / 25 ) - ( 3 / 12 ) + ( 2 / 70 )

= ( -6 / 25 ) - ( 1 / 4 ) + ( 1 / 35 ) [ ∵ 3 / 12 = 1 / 4 & 2 / 70 = 1 /35 by using 3 and 2 tables ]

= ( 28 × -6 ) - ( 175 × 1 ) + ( 20 × 1 ) / 700

= - 168 - 175 + 20 /700

= - 343 + 20 / 700

= - 323 / 700 is the answer.

Answer 2

Answer:

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