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PLEASE HELP
Problem in picture

PLEASE HELP Problem in picture-example-1

1 Answer

4 votes

Answer:

MB = 21

Explanation:

If M is the midpoint of AB, then AM = MB

AM + MB = AB

AM + AM = AB

Replace with AM = 3x+3 and AB = 8x-6

3x+3 + 3x+3 = 8x-6

Combine like terms

6x +6 = 8x-6

Subtract 6x from each side

6x-6x +6 = 8x-6x-6

6 = 2x-6

Add 6 to each side

6+6 = 2x-6+6

12 = 2x

Divide by 2

12/2 = 2x/2

6 =x

Now we want to find MB = AM

MB = AM

MB = 3x+3

= 3(6) +3

= 18+3

=21

User Miotsu
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