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Verdich [7]
3 years ago
13

20 - 10y - 7y + 9

Mathematics
2 answers:
Liula [17]3 years ago
4 0
29-3y, because 20+9, and 10y-7y :)
Maksim231197 [3]3 years ago
4 0

Suppose you want to equate an expression to zero:

\[\begin{array}{l}20 - 10y - 7y + 9 = 0\\29 - 17y = 0\\17y = 29\\y = \frac{{29}}{{17}}\end{array}\]

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Answer:

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