0.92×1.41＋0.92×8.59 ×-×1.3×11.6－1.6×1.3 ×11.6＋18.4×
求x的值：5：x=1．
计算 1.25﹣（+）×80%
计算：6×﹣5×．
解方程：2+1.8﹣5ⅹ=3.62ⅹ÷2.3=4.50.2（5x﹣1）+5（x﹣1）="0.8" 7（ⅹ﹣1.2）=2.1．
简算4.9+0.1﹣4.9+0.110.78﹣（2.78+3.693）99.99×22.22+33.33×33.34（2.5×2.5+2.5×2.5+2.5×2.5+2.5×2.5）×8．
×
-
×
×11.6＋18.4×
．
+
）×80%
×
﹣5
×
．
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