Question

The difference of a number and ninety when a=102

Answer 1

Write the expression as a – 90.

Substitute 102 in for the variable, a.

Simplify by subtracting 90 from 102

The answer is 12.

Explanation:

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Answer 2

It should be 12, assuming that a is a variable.

Explanation:

a = 102

a - 90 = ?

102 - 90 = 12

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