Mathematics · Linear Equations
If the pair of linear equations Testbook + 22x + 3y = 72ax + (a + b)y = 28 has infinitely many solutions, then which of the following relations between a and b is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1b + 2a = 0
- 2a + 2b = 0
- 3b = 2a
- 4a = 2b✓
Correct answer
a = 2b
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