Question

X = 10 3x + 5y = 20 What is the solution (x,y) of the system of equations?

Answer 1

3x+5y= 20

3(10)+5y= 20
30+5y= 20
-30 -30
——————
5y=-10
———-
5 5

y = -2

(10,-2)


Answer: (10,-2)

Answer 2

Answer:

X=10

Y=-2

Step-by-step explanation: The value of X is given therefore you use it to find the value of Y in the equation:

3(10)+5y=20

5y=20-30

5y=-10

5y/5=-10/5

5 is cancelled out leaving y=-2

I hope this helps. :)