please please help me I don't know
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Answered by
1
Answer:
-3-(x) =18
- (x) = 18 +3
-(x) = 21
x = -21
therefore -21 should be subtracted from -3 to get +21
-3 -(-21)=
-3+21=18
Answered by
1
Step-by-step explanation:
Let the unknown number be x.
Now,
(-3) - x = 18
(-3) = 18 + x
x = (-3) - 18
x = -21
Hence, the required Answer is-21
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