Subtracting a negative number has the same effect as adding a positive number. Therefore, in this instance, 10 - (-7) = 10 + 7 = 17.
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negative 49. This is because a minus multiplied by a plus is a minus.
negative 10 -10
-4 - 6 - (-10) = 0
(-4) - (-7) = (-4) + 7 = 3
-7--4=-7+4=-3