Question

solve N/5-4/7=3/2 this is maths please answer the question​

Answer 1

$\huge\mathfrak\green{\bold{\underline{☘{ ℘ɧεŋσɱεŋศɭ}☘}}}$

$\huge\tt\red{\bold{\underline{\underline{❥Question᎓}}}}$To solve:-N/5-4/7=3/2

$\huge\tt{\boxed{\overbrace{\underbrace{\blue{Answer</p><p> }}}}}$

╔════════════════════════╗

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _✍️

$⟹ \frac{n}{5} - \frac{4}{7} = \frac{3}{2}$

L.C.M OF 5&7 IS $\red{35}$

$⟹\frac{7n - 20}{35} = \frac{3}{2}$

$⟹14n - 40 = 105$

$⟹14n = 105 + 40$

$⟹14n = 145$

$\huge\tt{n = \frac{145}{14}}$

╚════════════════════════╝

нσρє ıт нєłρs yσυ

_____________________

тнαηkyσυ

Answer 2

Step-by-step explanation:

Let Nishu take x days to complete the work alone.

∴ Total work done by Nishu in 1 day = 1x

Also, Pintu takes (x + 6) days to complete the work alone.

∴ Total work done by Pintu in 1 day = 1x+6

Total work done by both in 1 day = (1x + 1x+6)

But, both take 4 days to complete the work together.

∴ Total work done by both in 1 day = 14

∴ 4(2x + 6) = x(x + 6)

∴ 8x + 24 = x2 + 6x

∴ x2 + 6x – 8x – 24 = 0

∴ x2 – 2x – 24 = 0

∴ x2 – 6x + 4x – 24 = 0

∴ x(x – 6)+ 4(x – 6) = 0

∴ (x – 6) (x + 4) = 0