SOLVE USING ELIMINATION *20 POINTS* 1. 3x - y = 28

3x - y = 14

a. (8,-4)

b. (-7,7)

c. (7,-7)

d. (-4,8)

2. x+ 4y 13

2x + 3y 6

a. (3,5)

b. (-3,4)

C. (4,5)

d. (4,4)

3. 12r-9y 30
6x + 15y = 54

A. x = 4 and y 2

B. x = 2 and y = 4

C. x = 14 and y 2

D. x = 37/7 and y =26/7

4. x + 3/2 y = -3

6/7x + 7y = -8

A. (27/8, -1/4)

B. (9/2, -5)

C. (-3/11, -10/11)

D. (-63 / 40, -19/20)

1. No answer ( may be due to incorrect question)

2. x = -3

y = 4

3. x= 4

y = 2

4.x = -63/40

y= -19/20

Step 1

Multiply equation 1 by the coefficient of x in equation 2

Multiply equation 2 by the coefficient of x I'm equation 1

(after completing this step you will derive equation 3 and 4 )

Step 2

Subtract equation 4 from equation 3

Step 3

Divide both sides of the equation by the coefficient of y

Step 4

substitute your value for y in equation 1 or 2

(after this you will derive the values of x)

Note : This method is for the Elimination of x

I hope it helps

answer:   14

step-by-step explanation:          

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b

2

−

b

b

3

+

7

b

2

+

14

b

+

6

%

−

3

b

3

+

7

b

2

+

14

b

+

6

%

step-by-step explanation: