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= -3+7+{-3}+7-10
= -3+7-3+7-10
= -2
(-3)+7+[(-1)×3]+7-10
[(-3)+7]+[(-3)+7]-10
[4+4]-10
8-10=
(-2)
jadi, (-3)+7+(-1)×3+7-10=(-2)