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Ex 2.5, 2 - Solve n/2 - 3n/4 + 5n/6 = 21 - Chapter 2 Class 8

Ex 2.5, 2 - Chapter 2 Class 8 Linear Equations in One Variable - Part 2


Transcript

Ex 2.5, 2 Solve the following linear equations. 𝑛/2−3𝑛/4+5𝑛/6=21 𝑛/2−3𝑛/4+5𝑛/6=21 (6𝑛 − 3(3𝑛) + 2(5𝑛))/12=21 (6𝑛 − 9𝑛 + 10𝑛)/12=21 (6𝑛 + 𝑛)/12=21 7𝑛/12=21 7n = 21 × 12 n = (21 × 12)/7 n = 36 L.H.S 𝑛/2− 3𝑛/4+5𝑛/6 =36/2 −(3 × 36)/4+(5 × 36)/6 =18−27+30 =21 = R.H.S ∴ LHS = RHS Hence Verified.

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.