Solve the system of equations using substitution.
2x - y = 2
2x + y = 6

let

2x _y=2 equation (1)

2x + y= 6 equation( 2)

Explanation:

equation (1) can be written as,

x = (2+y)/2 equation (3)

substituting the value of y from equation (3) in equation (2) ,we get

2 (2+y)/2 +y=6

2+y+y=6

2y=6_ 2

2y=4

y=2

from equation (3) , on substitution of y=2,we get

x=(2+2)/2

x=4/2

x=2

hence , x=2 and y= 2are the solution of the equation (1) and (2)

Neostigmine. Mechanism of Action: Inhibits the hydrolysis of acetylcholine by competing with acetylcholine for attachment to acetylcholinesterase at sites of cholinergic transmission. It enhances cholinergic action by facilitating the transmission of impulses across neuromuscular junctions.

Explanation: