Question

X+y=4,2x-y=5.solve the simultaneous equation​

Answer 1

(x, y) = (3, 1).

Explanation:

To solve the system of equations:

x + y = 4

2x - y = 5

We can use the method of elimination. We want to eliminate y from the equations, so we will multiply the first equation by 2 to get:

2x + 2y = 8

Now we can subtract the second equation from this equation to eliminate y:

2x + 2y - (2x - y) = 8 - 5

Simplifying, we get:

3y = 3

Dividing both sides by 3, we get:

y = 1

Now we can substitute this value of y into either equation to solve for x. Using the first equation, we get:

x + 1 = 4

Subtracting 1 from both sides, we get:

x = 3

Therefore, the solution to the system of equations is (x, y) = (3, 1).