Question

Solve the given pair of equations 2x + 5y = 1 & 3x - y = 8​

Answer 1

Answer:

x=2.27 y=0.70

Step-by-step explanation:

multiple the equation 2 by 5

then by elimination method

Answer 2

X= 2

Y= -1

Explanation:

This is a clear simultaneous equation.

3x−2

y=8

2x+5

y=−1

In order to solve this, either the x's or the y's must be balanced. It does not matter which one you start with.

For this, I'll balance the y's:

15x−10

y=40

Every value is multiplied by 5.

4x+10

y=−2

Every value is multiplied by 2.

Both y values can now be eliminated.

15x−10y+4x+10

y=19x

40−2=38

19x=38

Now solve for x.

x=38

19=2

Put the value for x back into either equation to find y.

3x−2y=8

3(2)−2y=8

6−2y=8

−2y=8

−6=2

Rearrange to find y.

−2y=2

Divide both sides by -2.

y=2−2

y=−1