The product of two numbers i -20/-9 if one number is 4 then the other number is
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pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
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let another be x
4x=-20/9
x=-20/9×1/4
x=-5/9.
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