Math, asked by thammashettysrinivas, 5 months ago

x - y = 7 2x -3y = - 8​

Answers

Answered by Anonymous
1

[1] x + y = 7

[2] 2x - y = 8

Graphic Representation of the Equations :

y + x = 7 y + 2x = 8

Solve by Substitution :

// Solve equation [1] for the variable y

[1] y = -x + 7

// Plug this in for variable y in equation [2]

[2] 2x - (-x +7) = 8

[2] 3x = 15

// Solve equation [2] for the variable x

[2] 3x = 15

[2] x = 5

// By now we know this much :

x = 5

y = -x+7

// Use the x value to solve for y

y = -(5)+7 = 2

Solution :

{x,y} = {5,2}

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