Verified Answer :

dasetka

w = 3y + 3z   Subtract 3z from both sides
     w - 3z = 3y           Divide both sides by 3
w - 3z / 3 = y             Switch the sides to make it easier to read
             y = w - 3z / 3

            w = 3y + 3z   Subtract 3y from both sides
     w - 3y = 3z           Divide both sides by 3
w - 3y / 3 = z             Switch the sides to make it easier to read
             z = w - 3y / 3

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