Question

Me respondam por favor ! Ex:1

Answer 1

x + x + x = 3x
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3y + y = 4y
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2ab²c + 5ab²c + ab²c = 8ab²c
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40x² - 25x² = 15x² 
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23,4xyz³ - 8,9xyz³ + 2,5xyz³ 
23,4xyz³ + 2,5xyz³ - 8,9xyz³ =
25,9xyz³ - 8,9xyz³ = 17xyz³
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0,34ab - 2,1ab - ab =
0,34ab - 3,1ab = - 2,7ab