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 If ordered pair (a + 2b, 9) = (7, 3a + 2b), then the values of a and b are
  • a)
    9, 7
  • b)
    1, 3
  • c)
    7, 9
  • d)
    3, 1
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
If ordered pair (a + 2b, 9) = (7, 3a + 2b), then the values of a and b...
A+2B=7------(1)
3A+2B=9------(2)
Subtracting (2) from (1)
we get, 2A=2
A=1
Subsitute A=1 in (1)
1+2B=7
2B=6
B=3
therefore A = 1, B = 3
 
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Most Upvoted Answer
If ordered pair (a + 2b, 9) = (7, 3a + 2b), then the values of a and b...
A+2B=7------(1)
3A+2B=9------(2)
Subtracting (2) from (1)
we get, 2A=2
A=1
Subsitute A=1 in (1)
1+2B=7
2B=6
B=3
therefore A = 1, B = 3
 
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Community Answer
If ordered pair (a + 2b, 9) = (7, 3a + 2b), then the values of a and b...
B is the answer. When we equate two ordered pairs then the corresponding elements are equal to each other. Here a+2b=7---------1 And 3a+2b=9-------2 Subtracting 1 from 2 2a=2 hence a=1 And on solving for b we get b=3.
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