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Solve the following: m-m-12=1-m-23 - Mathematics

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Question

Solve the following:

`m - (m - 1)/2 = 1 - (m - 2)/3`

Sum

Solution

Given, `m - (m - 1)/2 = 1 - (m - 2)/3`

⇒ `(2m - (m - 1))/2 = (3 - (m - 2))/3`

⇒ 3(2m – m + 1) = 2(3 – m + 2)  ...[By cross-multiplication]

⇒ 3(m + 1) = 2(5 – m)

⇒ 3m + 3 = 10 – 2m

⇒ 3m + 2m = 10 – 3  ...[Transposing –2m to LHS and 3 to RHS]

⇒ 5m = 7

⇒ `(5m)/5 = 7/5`  ...[Dividing both sides by 5]

∴ `m = 7/5`

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Chapter 4: Linear Equation In One Variable - Exercise [Page 117]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 4 Linear Equation In One Variable
Exercise | Q 75. | Page 117

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