Is frieda’s work correct? explain how she can check her solution.

z + 22 = 64
z + 22 – 22 = 64 – 22
z = 42

by substitution

Step-by-step explanation:

To check if the solution to an equation is valid

Substitute the solution into the equation and if both sides agree then the solution is correct.

left side = z + 22 = 42 + 22 = 64 = right side

Hence z = 42 is the correct solution

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step-by-step explanation:

entering that problem on the tube might get you an answer