Thuhuyen4111 Thuhuyen4111

13-11-2020
Mathematics

contestada

Plz can someone help me show work for these two problems!!

3x + y = 13

2x - y = -1

Respuesta :

bts941865 bts941865

13-11-2020

Answer:

3x +y = 13

Or, x=13-y/3......eqn(i)

Now putting the value of x

2x - y = - 1

Or, 2(13-y/3) - y = - 1

Or, 26 - 2y /3 - y = -1

Or, 26 - 2y - 3y = - 3

Or, 26 - 5y = - 3

Or, - 5y = - 3 - 26

Or,y = - 39/ (- 5)

Or, y = 7.8~

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