Question

Plz help, explain me the method
Topic: Simultaneous equations
Class 9 ICSE​

Answer 1

Hope so, it helped you.

Explanation:

For solving the equation i elimanated y by adding both the equation.

Answer 2

heyy matee...

going according to given parameters

let 2 numbers be x and y

so atq =>

3x + y = 142 => y = 142 - 3x

and 4x - y = 148

4x - ( 142 - 3x ) = 138

4x - 142 + 3x = 138

7x = 280

x = 40

now y = 142 - 3(40) = 142 - 120 = 22

so x = 40 and y = 22