Viral question from Chinese school

A correct answer explained by mathematician.
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[@RealQinnMalloryu4]

a)5

[@user-vy8sy8jd2w]

Answer is 5
4+4÷2[2]
4+4÷4
4+1
=5

[@mikephillips3635]

4 + 4/4
=5

[@jolantakrata1297]

4 + 4 : 4 =
4 + 1 = 5

[@shpresadedja9274]

5

[@kalpanabs8070]

5:is anwer

[@ljupkaivanovska1275]

12 is rezult

[@manuelquitevis6794]

4 + 4 :2 ( 2) = 4 + 2(2) = 4 + 4 = 8 ( b )

[@angelaramosmelo6247]

4+2x2
4+4=8(b)

[@niranjanchakraborty1139]

4+4÷2(1+1)=4+4÷2×2=4+2×2. =4+4=8

[@dawnyonyo6963]

8

[@samikorbi8448]

= 4 + 4 = 8

[@ShivShankarSharma-j8w]

5

[@vijayalakshmivenkataraman3517]

8

[@user-rj8qm5rl2u]

5

[@user-rj8qm5rl2u]

5