8.6+6.32=7.89﹣3.56=10﹣3.175=
x-x=18.7
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
x=18.7
+
÷12.5%)
-
÷
×1
×5.4-0.375×0.9
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