9.2k views
4 votes
Solve the system of equations below.

-3x + 6y = 9

5x + 7y = -49

User Arad
by
7.7k points

1 Answer

3 votes

Answer:


x=-7


y=-2

Explanation:

Given system of equations,

-3x + 6y = 9 ------(1)

5x + 7y = -49 ------(2),

LCM (3, 5) = 15,

5 × equation (1) + 3 × equation (2),

We get,

30y + 21y = 45 - 147

51y = -102


\implies y=-2

From equation (1),


-3x+6(-2)=9


-3x-12=9


-3x=9+12


-3x=21


x=-7

User Nestoraj
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories