2x + y = 3
x - 2y = -1

if equation two is multiplied by -2 and then the equations are added, the result is

Therefore, Result ( 1,1).

Step-by-step explanation:

Given : 2x + y = 3  and x - 2y = -1.

To find :If equation two is multiplied by -2 and then the equations are added, the result is .

Solution : We have given

2x + y = 3 (i)

x - 2y = -1(ii)

On multiplying equation(ii) by - 2 and adding in equation (i).

- 2x + 4y = 2       ( equation (ii) * - 2)

2x + y = 3          ( adding both equation).

0  + 5y  = 5.

On dividing both sides by 5.

y = 1.

Plug y = 1 in equation (i)

2x +1 =3

On subtracting both sides by 1

2x = 3-1.

2x = 2

x = 1.

( 1, 1)

Therefore, Result ( 1,1).

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5