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Anonymous
15.
Wiki User
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If you mean: 5x/7 -6 = x then x = -21
-19
It is 21/10 minus 1/10 = 20/10 or 2
-4 - 6 - (-10) = 0
minus 21 think of it as 12+9 which equals 21 then just whack a minus sign infront