题目内容
计算 (1)(﹣3)2﹣|﹣7|﹣15×(﹣
)
(2)﹣12+2×(﹣3)2÷|﹣6|
(2)﹣12+2×(﹣3)2÷|﹣6|
解:(1)(﹣3)2﹣|﹣7|﹣15×(﹣
),
=9﹣7+
,
=2+
,
=4
;
(2)﹣12+2×(﹣3)2÷|﹣6|,
=﹣1+2×9×6,
=﹣1+3,
=2.
=9﹣7+
=2+
=4
(2)﹣12+2×(﹣3)2÷|﹣6|,
=﹣1+2×9×6,
=﹣1+3,
=2.
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