![640\div 80 \times 4 - 4 \: of \: 20 + 639 - 72 \div 9 640\div 80 \times 4 - 4 \: of \: 20 + 639 - 72 \div 9](https://tex.z-dn.net/?f=+640%5Cdiv+80+%5Ctimes+4+-+4+%5C%3A+of+%5C%3A+20+++%2B+639+-+72+%5Cdiv+9)
Solve this Equation plz
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Step-by-step explanation:
651/28
GI've stars please
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