Question

Solve using properties:
5 3 5
7
+ - X
5
5
X
X
6 5
6.
4
​

Answer 1

Answer:

{7/5×(−3/12)}+{7/5+5/12}

Taking common factor, we get

=7/5×(−3/12+5/12)

=7/5×{(−3+5)/12}

=7/5×2/12

We get,

=7/30.

Answer 2

Step-by-step explanation:

-2/3 x 3/5 + 5/2 - 3/5 x 1/6 = -2/3 x 3/5 - 3/5 x 1/6 + 5/2 ( Using commutativity of rational number) = (-3/5) x (2/3 + 1/6) + 5/2 (Distributivity) = (-3/5) x (2x2 + 1/6) + 5/2 = 0-3/5) x (5/6) + 5/2 = (-3/6) + 5/2 = (-3+5 x 3/6) = (-3 + 15/6) = 12/6 = 2 (ii) 2/5 x (-3/7) - 1/6x3/2 + 1/14 x 2/5 = 2/5 x (1/14x2/5 - 1/6x32 (By commutativity) = 2/5 x (-3/7 + 1/14) - 1/4 = 2/5 x (-3x2 + 1/14) - 1/14 2/5 x 9-5/14_ - 1/4 = -1/7 - 1/4 = -4 -7/28 = -11/28Read more on Sarthaks.com - https://www.sarthaks.com/105267/using-appropriate-properties-find-i-2-3-x-3-5-5-2-3-5-x-1-6.