Substitution with negative numbers Evaluate 2 – (-4) + (-y) where y = 7. Stuck? Watch a video or use a hint.
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Answer:
-1
Step-by-step explanation:
2 - (-4) + (-y)
plug in 7 as y
2 - (-4) + (-7)
so you start with the first addition/subtraction (PEMDAS)
also the negative is distributed to the -4 make it positive, a negative and a negative equals a positive, therefore positive 4
2 - (-4) = 6
or
2 + 4 = 6
then... the equation reads
6 + (-7) = -1
*becareful -7 is "more than/ more negative than" 6 making the answer a negative