Answer:
8n
Step-by-step explanation:
Say x is the number
7x +3 = 39 -2x
Add 2x to each side
9x +3 =39
Subtract 3 from each side
9x =36
Divide by 9 on each side
x=4
Hope this helped
Answer:
(
5
+
√
55
,
0
)
,
(
5
−
√
55
,
0
)
Step-by-step explanation: