Question
Asked Nov 19, 2019
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system of equations

2x+5y=4

x-y=3

pairs given (6,5) (8,-4) (7,-2) and (2,6). 

The solution(s) of the given system of equations is/are the ordered pair(s)

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Expert Answer

Step 1

Consider the given system of equation

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2x5y 4 ndx-y=3

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Step 2

Now equation 2 multiply by 2

Then

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2x-2y- 6 Now subtract equation 1st from the equation 3rd Then 2х+5у-2х+2у* %3D 4 -6 2y2 +5y 2 0 2y +5у+2-0 (y+2)(2y+1)=0

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Step 3

Then the value of y ...

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-1 y 2& y 2 Now substitute these-value in the equation 1st Then value of x 2x5 2 2x+5y 4 4 = 13 х — 4 2х +5x(-2)-4 & x = 7

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Tagged in

Math

Algebra

Equations and In-equations