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Home > A2C > Chapter 7 > Lesson 7.1.3 > Problem 7-42

7-42.

Solve for x, y, and z: (2x)(3y)(5z) = (23)(3x−2)(52x−3y). Homework Help ✎

Make a system of equations using the exponents.

x = 3
y = x − 2
z = 2x − 3y

The system of equations gives you the value of x. Substitute the value of x into the second and third equations.
From there, solve as if there were only two equations.