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a)340ml+18cl+9l=?cl
b)899l-9000ml-830dl=?l
c)980cl-8l+58dl-1200ml=?cl
3dl+?dl=1l
40cl+?cl=1l
400ml+?ml =1l

95cl+?cl=1l
1l=60cl+?cl
1l=1dl+?dl
1l=455ml+?ml
1l=655ml+?ml