问题
解答题
计算: (1)[50-(
(2)-32×1.22÷0.32+(-
|
答案
(1)[50-(
-7 9
+11 12
)×(-6)2]÷(-7)21 6
=[50-(28-33+6)]÷49
=[50-1]÷49
=49÷49
=1;
(2)-32×1.22÷0.32+(-
)2×(-3)3÷(-1)20071 3
=-9×1.44÷0.09+
×(-27)÷(-1)1 9
=-144+3
=-141.