Question

Q1) x+y=103
x-2y=19


solve

•​

Answer 1

Answer:

{x,y} = {75,28}

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Step-by-step explanation:

Solve equation [2] for the variable x

[2] x = 2y + 19

// Plug this in for variable x in equation [1]

[1] (2y+19) + y = 103

[1] 3y = 84

// Solve equation [1] for the variable y

[1] 3y = 84

[1] y = 28

// By now we know this much :

x = 2y+19

y = 28

// Use the y value to solve for x

x = 2(28)+19 = 75

Solution :

{x,y} = {75,28}

Answer 2

Answer:

1) x+y=103

x-2y=19

Step-by-step explanation