Question

Use the system of equations to answer the questions. 2x + 3y = 3 y = 8 – 3x The value of y from the second equation is substituted back into the first equation. What is the resulting equation? What is the value of x? What is the value of y?

Answer 1

the correct answers for edu are 2x+3(8-3x)=3 than 3 and last -1

Explanation:

Answer 2

• 2x +3(8 -3x) = 3
• x = 3
• y = -1

Explanation:

The second equation tells you ...

y = 8 -3x

Using this expression in the first equation gives you ...

2x +3(8 -3x) = 3

2x +24 -9x = 3 . . . . . eliminate parentheses

21 = 7x . . . . . . . . . . . add 7x -3

3 = x . . . . . . . . . . . . . . divide by 7

y = 8 -3×3 = -1 . . . . . . use the second equation to find y

The solution is (x, y) = (3, -1).