Y-8x plus 9y equals 10y-8x.
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9y+3 = 5y+13 9y-5y = 13-3 4y = 10 y =2.5
-9y + 8 = -91-9y = -91 -8-9y = -99y = -99-----9y = 11-99/-9 = 11 because -9X11 = -99
9y subtract 11 equals 7
12y+3=9y-15 3y=-18 y=-6
4y + 10 = -18 4y = -28 y = -7