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Sagot :

90-7x3

90-21=69

Ther you go have a great day
VectorFundament120

Answer:

69

Step-by-step explanation:

We are given the expression:

[tex] \displaystyle \large{10y - 7z}[/tex]

Evaluate the expression when y = 9 and z = 3; substitute y = 9 and z = 3 in the expression.

[tex] \displaystyle \large{10(9)- 7(3)} \\ \displaystyle \large{90- 21} \\ \displaystyle \large{69}[/tex]

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