MP 8 Maths

MP Board Class 8th Maths Solutions Chapter 2 एक चर वाले रैखिक समीकरण Ex 2.5

MP Board Class 8th Maths Solutions Chapter 2 एक चर वाले रैखिक समीकरण Ex 2.5

MP Board Class 8th Maths Solutions Chapter 2 एक चर वाले रैखिक समीकरण Ex 2.5

प्रश्न 1.
निम्न रैखिक समीकरणों को हल कीजिए –

8. 15 (y – 4) – 2 (y – 9) + 5 (y + 6) = 0
15y – 60 – 2y + 18 + 5y + 30 = 0
या 15y – 2y + 5y = 60 – 18 – 30
या 18y = 12
या y = 12/18 = 2/3

9. 3 (5z – 7) – 2 (9z – 11)= 4 (8z – 13) – 17
15z – 21 – 18z + 22 = 32z – 52 – 17
या 15z – 18z – 32z = – 52 – 7 + 21 – 22
या – 35z = – 70
या z = 70/35
z = 2

10. 0.25 (4f – 3) = 0.05 (10f – 9)
f – 0.75 = 0.5f – 0.45
या f – 0.5f = – 0.45 + 0.75
या 0.5f = 0.30
या f= 0.30/0.5
या f= 0.6

MP Board Class 8th Maths Solutions

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