No, w-w = 0. Any number minus itself is zero.
On the other hand, 0 - w = -w.
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They are identities because they are true for ALL values of w and x.
13x60minus w
13 multiplied by the amount (quantity) 60 minus w is written mathematically as 13(60-w).
To evaluate t-7 over w for t equals -3 and w equals -2, we substitute -3 for t and -2 for w in the expression. This gives us (-3) - 7 over (-2), which simplifies to -10 over -2. Further simplifying, we get 5 as the final result.
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