Anumber plus it’s half is 21
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How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?