The value of a, if the value of -x+ 3r - a is equal to 8, when X=1, is
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-x + 3r - a = 8
Replace x with -1
-(-1) + 3r - a = 8
3r - a = 8 - 1
3r - a = 9
-a = 9-3r
A = -9 + 3r
A = 3r - 9
Hope it helps. Place value of r if given in question.
Replace x with -1
-(-1) + 3r - a = 8
3r - a = 8 - 1
3r - a = 9
-a = 9-3r
A = -9 + 3r
A = 3r - 9
Hope it helps. Place value of r if given in question.
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