计算:(134-78-712)÷(-78)+(-83).-数学

题目简介

计算:(134-78-712)÷(-78)+(-83).-数学

题目详情

计算:(1
3
4
-
7
8
-
7
12
)÷(-
7
8
)+(-
8
3
)
题型:解答题难度:中档来源:不详

答案

原式=class="stub"7
4
×(-class="stub"8
7
)-class="stub"7
8
×(-class="stub"8
7
)-class="stub"7
12
×(-class="stub"8
7
)-class="stub"8
3
                              
=-2+1+class="stub"2
3
-class="stub"8
3

=-1-2
=-3.

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