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PSYCHO15rus [73]
3 years ago
7

Is -7+9=-9+7 true, false, or open? I forgot how to do this. :(

Mathematics
1 answer:
Marta_Voda [28]3 years ago
4 0
-7 + 9 = -9 + 7
2 = -2 .......FALSE

4x - 3 = 19 .....if it has a variable in it, it is OPEN
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