Question 991378
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F=first number; S=second number
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F+S=16
F=16-S
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F+(3S+2)=18
(16-S)+(3S+2)=18
2S+18=18
2S=0
S=0
ANSWER 1: The second number is 0.
F=16-S=16-0=16
ANSWER 2: The first number is 16.
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CHECK:
F+3S+2=18
16+3(0)+2=18
16+2=18
18=18