Question

A) {2x + 3y = 26
{X - 2y = 4

B) {8x – 2y = 60
{4x + y = 34

C) {3x + 4y =13
{x   + 2y = 5   

D) {5x – 8y = 9
{5x + y   =27

E) {2y – 4x = -20
{4y + x = 50

F) {9y + 3x = 90
{9y – x = 78 

  G)  {3x + y = 23
        {x – 2y = -4
      
H) { 4X -3Y = -1
    { X + 2Y =    8      





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Answer 1

A)

{2x + 3y = 26

{X - 2y = 4

2x+3y=26

2x= 26-3y

X= (26-3y)/2

X-2y= 4

(26-3y)/2= 4

26-3y= 4.2

26-3y= 8

-3y= 8-26

-3y= -18

Y= -18/-3

Y= 6