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Mathematics, 13.10.2020 05:01 angelynb1497

0.4(20-10m)+ 2.5-2m-12.5 the answer is -6 -2 but i need the explaination

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0.4(20-10m)+ 2.5-2m-12.5 the answer is -6 -2 but i need the explaination...
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