Question

sum of the two numbers is 153 and their difference is 7 represent in linear equations in two variables and find them​

Answer 1

$\bold{\huge{\fbox{\color{Black}{Given}}}}$

• Sum of two no = 153

• Difference of two no = 7

$\bold{\huge{\fbox{\color{Black}{ToFind}}}}$

1st and 2nd Number

$\bold{\huge{\fbox{\color{Black}{Solution}}}}$

Let,

• 1st no be x

• 2nd no be y

According to Question :-

• => x + y = 153. --(1)

• => x - y = 7. ---(2)

From (1) , We substitute value of x

We get,

• => x + y = 153

• => x = 153 - y

Put this value in (2), we get,

• => x - y = 7

• => ( 153 - y) - y = 7

• => 153 - y - y = 7

• => -2y = 7 - 153

• => -2y = -146

• => y = -146/-2 = 73

So,

• => x = 153 - y

• => x = 153 -73 = 80

Hence,

• 1st no = 80

• 2nd no = 73