Answer:
+x - 7
Explanation:
-(-x - 7)
- × - = +
- × + = -
-(-x - 7) = +x - 7
All 10 answers can be found in the attached document.
L.H.S x 0 = 0
R.H.S x 0 = 0
L.H.S = R.H.S
Hence , proved .....
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