Question

What is the solution to this system of linear equations?

y − 4x = 7

2y + 4x = 2

Answer 1

Answer:

dony

Step-by-step explanation:

Answer 2

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// Solve equation [1] for the variable y

• [1] y = 4x + 7

// Plug this in for variable y in equation

• [2] 2•(4x+7) + 4x = 2
• [2] 12x = -12

// Solve equation [2] for the variable x

• [2] 12x = - 12
• [2] x = - 1

// By now we know this much :

• y = 4x+7
• x = -1

// Use the x value to solve for y

• y = 4(-1)+7 = 3

Solution :- {y,x} = {3,-1}

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