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Home > A2C > Chapter 2 > Lesson 2.1.2 > Problem 2-25

2-25.

Substitute 3x + 1 for y in the second equation.

x + 2(3x + 1) = −5

(−1, −2)

Multiply the entire second equation by −2.

−2x + 4y = −2

Add the equations together.

Solve for x.

x = 3

(3, 1)