227,218 views
6 votes
6 votes
Solve the system of linear equations by the elimination method.2x + 10y = 23x - 5y = -17

User Arpit Ratan
by
2.6k points

1 Answer

23 votes
23 votes

We will have the following:

2x + 10y = 2

2(3x - 5y = -17)

-----------------------

2x + 10y = 2

6x - 10y = -34

------------------------

8x + 0y = -32 => x = -4

Now, we replace in one of the expressions and solve for y:

2(-4) + 10y = 2 => -8 + 10y = 2

=> 10y = 10

=> y = 1

So, the solution of the system is (-4, 1).

User Cem Kaan
by
2.7k points