Question

2x+2y=6
2x-5y=8 by elimination method

Answer 1

Answer:

X =23/,7,.y =-2/7 are the answers

Answer 2

x = 2.714

y = 0.285

Explanation:

Given:

2x+2y=6

2x-5y=8

To find:

The value of x and y

Solution:

==> Using Elimination Method,

==> 2x+2y=6 ==>1

==> 2x-5y=8 ==>2

==> Multiply by -1

==>-1( 2x-5y=8 )

==> -2x+5y=-8 ==>3

==> Solving Equation 1 and 3

==> 2x+2y=6

==> -2x+5y=-8

      ----------------

            7y = -2

      -----------------

==> 7y=-2

==> y=-2÷7

==> y = 0.285

==> y= 2/7

==>Apply y value in equation 1

==> 2x+2y=6

==> 2x = 6-2y

==> $2x=6-\frac{2\times2}{7}$

==> $2x=\frac{42-4}{7}$

==> $2x=\frac{38}{7}$

==> $x=\frac{38}{7\times2}$

==> x=38/14

==> x = 2.714