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write an equation to represent the relationship "a number decreased by negative 2 is equal to 21."Then solve the equqtion
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write an equation to represent the relationship "a number decreased by negative 2 is equal to 21."Then solve the equqtion

User DanMunoz
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2 Answers

7 votes
If it is a number (n) decreased by -2 is equal to 21 then the equation would be
21=n-2
To find n you would add 2 to the other side so 21+2=23
So the full equation with the answer would be
21=23-2
User Zaolian
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8.7k points
5 votes
x - (-2) = 21 <== ur equation
x + 2 = 21
x = 21 - 2
x = 19
User PanosPlat
by
8.5k points
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