222k views
4 votes
6x + 5y = 4
- 6x + y = 20

2 Answers

3 votes

Answer:

Y=5 X=6

Explanation:

WHAT YOU WANNA DO IS GETT THE Y BY IT SELF SO MULTIPLY Y ON BOTH SIDES

User CUGreen
by
4.6k points
1 vote

Answer:

x = -8/3

y = 4

Explanation:

I assume you want to solve for x and y.

The best way to do this with the two formulas given is elimination. This means add the two equations together.

6x + 5y = 4

-6x + y = 20

The 6 x and -6x will cancel each other. By adding the like terms of the two together you will come out with

6y = 24

Now solve for y by dividing both sides by the 6.

y = 24/6 = 4

Now that we have y, you can plug it into one of the equations and solve for x.

Let's use -6x + y =20.

So plug in the 4 for y to get -6x + 4 = 20

Subtract the 4 from both sides then solve for y by dividing both sides by the -6.

-6x = 16

x = -16/6

You can reduce that down so that x = -8/3.

User Bkurzius
by
4.6k points