Question

(b) 37 - (-20)
$37 - {- 20}$
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Answer 1

Question:-

$37 - ( - 20)$

Solution:-

$37 - ( - 20)$

$= 37 + 20$

$= 57$

We have to know that

$- \times - = +$

$+ \times + = +$

$+ \times - = -$

$- \times + = -$