Question

-13 + ( -15 ) - ( + 12 ) + 3


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Answer 1

$\huge\mathcal{\fcolorbox{aqua}{red}{\fcolorbox{aqua}{orange}{ANSWER....!!!}}}$

$= - 13 + ( - 15) - (12) + 3 \\ \\ = - 13 - 15 - (12 + 3) \\ \\ = - 28 - 15 \\ \\ = - 42$

$\huge\mathcal{\fcolorbox{aqua}{red}{\fcolorbox{aqua}{orange}{-42}}}$