Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/calculator.php

Line Number: 37

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Elimination method:

2 ( 3x+3y = 5) [Multiply 1

6x + 6y = 5 + (6x – 2y = 7) [Add both eq2 and eq3]

4y = 12 ;

3x + 3(3) = 5 [Substitute value of y into eq 1]

3x = 5 – 9

x = -4/3

8x + 3y = 5 ; x= (5-3y)/8

6{(5-3y)/8} – 2y = 8 [substitute the value of x into eq2]

3(5-3y)/ 4 - 2y= 8

15– 9y – (4x2)y = 8x4 ; -17y = 32 – 15

Y= - 17/ 17 = -1

8x+ 3(-1) = 5 [Substitute the value of y into eq 1 ]

8x= 5-3; X= 2/8 = 1/4