14/2
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1
(14x2)-9
14.5
Re-write it properly first, in all-algebraic language: ' 7 + 8j + 7 -2j ' Now put like terms together: ' 7 + 7 +8j - 2j ' Then simplify by doing the arithmetic: ' 14 + 6j. ' And there you are!
"16-7w plus 14-6w" is an algebraic expression - not an equation nor an inequality. It cannot be solved. So there is no way to determine the value of w and therefore the value of w-1.