Question

2x - 3y= 9 ; 2x + y = 13 ( solve the simultaneous equations )

Answer 1

Step-by-step explanation:

2x - 3y= 9 ; .........(i)

2x + y = 13 ...........(ii)

SUBTRACTING BOTH EQNS

2x+y-(2x-3y)=13-9

=>4y=4

=>y=1

=>x=13-1/2=6

Answer 2

SOLUTION -

☢ We are solving this by elimination method .

→ Subtract both the equation.

2x - 3y = 9

2x + y = 13

_____________

$\:\:-\:\:-\:=\:-\:$

_____________

$\:\:\:-4y\:=\:-4$

_____________

-4y = -4

y = 1

Substitute y = 1 in equation 1

2x - 3(1) = 9

2x = 9 + 3

2x = 12

x = 6

x = 6 and y = 1