Answer:
Step-by-step explanation:
2z+4x+9y-y+3
2z+4x+8y+3
=2z+4x+8y+3
(x-5)(x^2+16)
Maybe 7?
Sorry if it incorrect
Step 1
When moving the 4 to the other side, Viet was supposed to subtract 4 from each side, leaving 0 on the left, and 102-4 on the other side. 102-4=98, not 106. Viet added when he was supposed to subtract.
Answer: x=27
