2
Penjelasan dengan langkah-langkah:
(-) + (+) = (+)
(-) + (-) = (+)
(+) - (-) = (-)
(+) + (-) = (-)
-2 + 4 =
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2
Penjelasan dengan langkah-langkah:
(-) + (+) = (+)
(-) + (-) = (+)
(+) - (-) = (-)
(+) + (-) = (-)
-2 + 4 =