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shawnkat
Hey there!
We're going to be writing an expression, which means there's no equals sign, and no values are being compared or set equal to each other.
When we say decreased by seven, we really mean you're subtracting seven from that quantity because to decrease is to take away.
Therefore, if we have our number q decreased by seven, we have:
q - 7
Hope this helps!

A variable expression for a number q decreased by 7 is given mathematically as q – 7.

What is simplification?

Making anything easier to accomplish or comprehend, as well as making it less difficult, is the definition of simplification.

A variable expression for a number q decreased by 7.

This can be written as mathematically.

⇒ q – 7

More about the simplification link is given below.

https://brainly.com/question/12616840

#SPJ2

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