Explanation:
Evaluate 5x − 2y + 3z when x = −2, y = −4, and z = 3. If you missed this ... 3x − 5y = 27 . If you missed ... Every solution to the equation is an ordered triple, (x, y, z) that makes the equation true. ... y = 2x. 2x − y = 0. Use equations (1) and (2) to eliminate z. Use (3) and (4) to eliminate y. Solve for x. ... 4x + 3y = −8. 182. ⎧.