Question

Simplify :
(7 3/10) + (–10 7/21)

Answer 1

$as \: + - = -$



$= 7 \frac{3}{10 } - 10 \frac{7}{21} \\ \\ = \frac{73}{10} - \frac{217}{21} \\ \\ = \frac{1533 - 2170}{210} \\ \\ = - \frac{ - 637}{210}$

Answer 2

Solution :

( 7 3/10 ) + ( -10 7/21 )

= 7 3/10 - 10 1/3

= 73/10 - 31/3

LCM ( 10 , 3 ) = 30

= ( 219 - 310 )/30

= -91/30

= - 3 1/30

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