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klio [65]
4 years ago
11

The average of 8 and what number = 3

Mathematics
2 answers:
Kazeer [188]4 years ago
8 0

Answer:

The number is -2

Step-by-step explanation:

The average of 8 and x

(8+x)/2

is 3

(8+x)/2 =3

Multiply each side by 2

(8+x)/2 *2 =3*2

8+x = 6

Subtract 8 from each side

8+x-8 = 6-8

x = -2

Leviafan [203]4 years ago
5 0

Answer:

-2

Step-by-step explanation

8+x/2=3

2(8+x/2)=3(2)

8+x=6

8-8+x=6-8

x=-2

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