Question

-6y= -20 + 2x 2x – 4y=0 Solve by elimination

Answer 1

Answer:

$x=5\\\\y=2$

Step-by-step explanation:

Given Equations:

        $-6y= -20 + 2x$    Equation:1

Solving Equation:1 Adding '$6y$' to both the sides:

             $2x+6y-20=0$  

Adding '20' both the sides:

              $2x+6y=20$   Equation:2

$2x - 4y=0$  Equation:3

Subtracting Equation:3 From Equation:2

          $2x+6y-(2x-4y)=20-0\\\\2x+6y-2x+4y=20\\\\10y=20\\\\y=\frac{20}{10}\\\\ y=2$

Putting the value of 'y' in equation:3

          $2x - 4y=0$

          $2x-4(2)=0\\\\2x-8=0$

Adding '8' to both the sides

             $2x=8\\\\x=8/2\\\\x=5$

SO,  

              $x=5\\\\y=2$