Question

Plz Clear Me The Dought With Step's...
I will mark it as brainliests...
And I Will Follow,and I will give Like also I will rate The Stars...

1st Preference Goes To The Person Who Answer's 1st...​

Answer 1

Given :

$\sf\star{the \: sum \: two \: numbers =81}$

$\sf\star{ if \: one \: number \: =\: \dfrac{4}{5}}$

$\star\sf{ To \: find \to \: other \: numbers }$

Answer :

➯ Let the other number be

So the sum of two numbers =81

➡ According to the given conditions:

$\implies \sf \: x + y = 81 \: \: ...(given)...(1)$

$\\ \implies \sf \: \: x = \frac{4}{5}y \: ....(given)...(2)$

➡ Put equation (2) in equation (1) we get,

$\implies \sf \: x + y = 81$

$\\ \implies \sf \: \frac{4}{5} y + y = 81$

$\\ \implies \sf \: 4y + 5y = 5 \times 81$

$\\ \implies \sf \: 9y = 5 \times 81$

$\\ \implies \sf \: \cancel9y = 5 \times \cancel{81}9$

$\\ \implies \sf \: y = 5 \times 9$

$\implies \therefore \boxed{ \sf{ \: y = 45}} \: ...(3)$

➡ Put equation (3) in equation (1) to get x value :

$\\ \implies \sf \: x + y = 81$

$\\ \implies \sf \: x + 45 = 81$

$\\ \implies \sf \: x = 81 - 45$

$\implies \therefore \boxed{ \sf \: x = 36}$

➡ the other number will be (x, y) =(45,36)