Question

1) Find

(b) 72 - (90)

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Answer 1

$\huge\bf{{\color{indigo}{A}}{\color{maroon}{N}}{\red{S}}}$

➙ 72 - (90)

➠ -18

(Here we will see the bigger number's sign.If the bigger number has positive sign, the ans will have positive sign.If the bigger no. has negative sign, the ans will also have negative sign)

Answer 2

72 - ( + 90 )
= 72 - 90
= -20 Ans