-7+8 is a positive number that equals 1, but -78 is a negative number because it has a negative sign.
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The expression "negative 8 minus 7" can be simplified as -8 - 7. To subtract a positive number from a negative number, you can add the opposite. Therefore, -8 - 7 is the same as -8 + (-7), which equals -15.
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A negative... as in (-5) + (-7) = (-12). A negative timesa negative is a positive... as in (-5) X (-7) = (+35)
No a negative plus a negative is not a positive answer. example. -5+-2=-7 but if you are subtracting a negative number from a negative, then the second negative number would become a positive. example. -5 - -2= -5+2= =-3
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