Question

Solve the system of equations 3x + y = 3 and 7x + 2y = 1.

1. Solve for the variable y in the first equation:     y = 3 − 3x

2. Substitute the value for y into the second equation:  7x + 2(3 − 3x) = 1

3. Solve for x: x =

Answer 1

Explanation:

here is the answer

Answer 2

(-5, 18)

Explanation:

7x + 2(3 − 3x) = 1 simplifies to

7x + 6 - 6x = 1, which, in turn, simplifies to:

x = -5

Using y = 3 - 3x (see Step 1), we find that y = 3 - 3(-5) = 3 + 15 = 18.

Thus, the solution is (-5, 18).