x=1 y=1 Use elimination (hint: multiply first equation by 3 and then add them up)

## 2 Answers By Expert Tutors

Here we have two equations and two unknowns. The best way to solve for a system of equations like this is to find a way to isolate one variable in one equation and in turn plug that into your second equation. Here, we see that y can easily be isolated in the first equation:

3x + y = 4

- to isolate y we just subtract 2x from both sides, resulting in y = 4 - 3x

We can now plug this value of y into our second equation:

- 4x - 3*(4-3x) = 1
- distribute your -3 to all terms in the parenthesis:
- 4x - 12 + 9x = 1
- Move all x's to the left and all integers to the right: 13x = 13
- divide both sides by 13 and obtain
__x = 1__

We can now plug this back into our formula to solve for y

- y = 4 - 3x = 4 - 3*1 = 4-3 = 1
__y = 1__

Answer: B. x =1, y=1

## Still looking for help? Get the right answer, fast.

Get a free answer to a quick problem.

Most questions answered within 4 hours.

#### OR

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.