Question

Find the solution to the system of equations: x + 3y = 7 and 2x + 4y = 8 1. Isolate x in the first equation: 2. Substitute the value for x into the second equation: 3. Solve for y: 4. Substitute y into either original equation: 5. Write the solution as an ordered pair: x = 7 – 3y 2(7 – 3y) + 4y = 8 14 – 6y + 4y = 8 14 – 2y = 8 –2y = –6 y = 3 x + 3(3) = 7 ( ,

Answer 1

1. x= 107.5
2. y= -33•5

Step-by-step explanation:

x=7- 3y

2( 7- 3y)+ 4y= 81

14- 6y+ 4y=81

-2y= 67

y= -33•5

x+3(-33•5)= 7

x=100•5 +7

x=107•5