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undeadknight26
This is how you work it out:
u + xy
Plug in your numbers that you know:
20 + 9 * 8
20 + 72
92

As per linear equation the value of u + xy is 92.

What is a linear equation?

A linear equation is an equation that contains one or multiple variables, where the highest degree of the variable is one.

Given, u = 20, x = 9, and y = 8.

Therefore, u + xy

= 20 + 9 × 8

= 20 + 72

= 92

Hence,  u + xy = 92

Learn more about linear equation here: https://brainly.com/question/1641456

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