Question

what is the solution to this system of equations (Use the elimination method by multiplying the first equation by 3.) 2x+y=20 6x-5=20​

Answer 1

(7, 6)

Explanation:

multiply first eq. by 3 to get 6x - 3y = 60

now do

6x + 3y = 60

- 6x - 5y = 12

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

8y = 48

solve for y: y = 6

with this y value, plug it in to the first equation (easier to solve) and get 2x + 6 = 20

solve for x and get x = 7

so ans is (7, 6)