Question

By elimination method, find the solution of the following pair of linear equations. 3x - 4y = 10 and 5x + y = 9​

Answer 1

Answer:

3x-4y=10

20x+4y=36

=23x=46

x=46÷23

x=2

Step-by-step explanation:

x=2

Answer 2

1) Let's solve for x.

3x−4y=10

Step 1: Add 4y to both sides.

3x−4y+4y=10+4y

3x=4y+10

Step 2: Divide both sides by 3.

3x/3=4y+10/3

x=4/3y+10/3

2) Let's solve for y.

3x−4y=10

Step 1: Add -3x to both sides.

3x−4y+−3x=10+−3x

−4y=−3x+10

Step 2: Divide both sides by -4.

-4y/-4=-3x+10/-4

y=3/4x

+15/2

2) Let's solve for x.

5x+y=9

Step 1: Add -y to both sides.

5x+y+−y=9+−y

5x=−y+9

Step 2: Divide both sides by 5.

5x/5=-y+9/5

x=-1/5y+9/5

Let's solve for y.

5x+y=9

Step 1: Add -5x to both sides.

5x+y+−5x=9+−5x

y=−5x+9