Question

Solve using suitable property
-2/7x7/9+ 2/5x 7/9

Answer 1

Answer:

-2/7×7/9+2/5×7/9

=-2/9+14/45

=10+14/45

=24/45(ans)

Answer 2

Answer:

The answer is 4/45

Step-by-step explanation:

$- 2 \div 7 \times 7 \div 9 + 2 \div 5 \times 7 \div 9 \\ = 7 \div 9( - 2 \div 7 + 2 \div 5) \\ = 7 \div 9( (- 2 \div 7 \times 5 \ \div 5) +( 2 \div 5 \times 7 \div 7)) \\ = 7 \div 9( - 10 \div 35 + 14 \div 35) \\ = 7 \div 9(4 \div 35) \\ = 28 \div 315$

=4/45