Question Which is the best first step and explanation for solving this system of equations? 3x+y=7 x+y=3

Answer: x = 2 and y = 1 Step-by-step explanation: Given equations are : 3x+y=7 ….(1) x+y=3 ….(2) Subtract equation (1) and (2) we get : 3x+y-(x+y) = 7-3 3x+y-x-y = 4 3x-x = 4 2x = 4 x = 2 Now put the value of x in equation (2) 2+y=3 y=3-2 y = 1 Hence, the solution of the equations are x = 2 and y = 1. Log in to Reply

Answer:x = 2 and y = 1

Step-by-step explanation:Given equations are :

3x+y=7 ….(1)

x+y=3 ….(2)

Subtract equation (1) and (2) we get :

3x+y-(x+y) = 7-3

3x+y-x-y = 4

3x-x = 4

2x = 4

x = 2Now put the value of x in equation (2)

2+y=3

y=3-2

y = 1Hence, the solution of the equations are x = 2 and y = 1.