Solve the system of equations by substitution.
x +
y = 32
x -
y = 40
A. (-100, -27)
B. (-100, 27)
C. (100, 27)
D. (100, -27)
Answer: D
Mathematics
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A.
B.
C.
D.
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A. 3
B. -
C. -3
D. -12
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