7w - 4w - 6w = (7 - 4 - 6)w = -3w
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"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.
7w + 2 = 3w + 94 Subtract 3w from both sides: 4w + 2 = 94 Subtract 2 from both sides: 4w = 92 Divide both sides by 4: w = 23
4y + 3w + 4x + 9y + 7x - 7w (combine like terms)-4w + 11x + 13y
w = 3 16 = 4w + 2w - 2 Move the 2 to other side 16 + 2 = 4w + 2w 18 = 6w 18 / 6 = 3 = w
-63=7w