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计算:(1)(-4)-(+13)+(-5)-(-9)(2)(16+14-12)×(-24)(3)-24+(-3)2+5×(-6
计算:(1)(-4)-(+13)+(-5)-(-9)(2)(16+14-12)×(-24)(3)-24+(-3)2+5×(-6)...
计算:(1)(-4)-(+13)+(-5)-(-9)(2)(16+14-12)×(-24)(3)-24+(-3)2+5×(-6)
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(1)(-4)-(+13)+(-5)-(-9)
=-4-13-5+9
=-22+9
=-13;
(2)(
+
-
)×(-24)
=-
×24-
×24+
×24
=-4-6+12
=2;
(3)-24+(-3)2+5×(-6)
=-16+9-30
=-37.
=-4-13-5+9
=-22+9
=-13;
(2)(
1 |
6 |
1 |
4 |
1 |
2 |
=-
1 |
6 |
1 |
4 |
1 |
2 |
=-4-6+12
=2;
(3)-24+(-3)2+5×(-6)
=-16+9-30
=-37.
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