Question

Solve the following system of equations . y = - x + 7, \qquad 4x - 5y = 10 Write your answer as an ordered pair in the form(x,y)

Answer 1

Answer:

(5, 2)

Step-by-step explanation:

Lets substitute y = -x + 7 into 4x-5y=10

Then we can write 4x-5y=10 as 4x-5×(-x+7)=10,

4x-(-5x)-35=10

9x-35=10

9x=45

x=5, therefore, y= -5+7=2