Question
Solve 3x + 2y = 12 and x − y = 1 by elimination. (NCERT Class 10, Pair of Linear Equations – Important)
Answer: From x−y=1 ⇒ x=y+1. Substitute in 3x+2y=12: 3(y+1)+2y=12 ⇒ 5y+3=12 ⇒ y=9/5. Then x=y+1=14/5.
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Question
Answer: From x−y=1 ⇒ x=y+1. Substitute in 3x+2y=12: 3(y+1)+2y=12 ⇒ 5y+3=12 ⇒ y=9/5. Then x=y+1=14/5.
Question
Answer: From x−y=1 ⇒ x=y+1. Substitute in 3x+2y=12: 3(y+1)+2y=12 ⇒ 5y+3=12 ⇒ y=9/5. Then x=y+1=14/5.