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118

Step-by-step explanation:

AD = BD

5x - 11 = 3x + 17

Move the constants to the one side

5x - 11 = 3x + 17

    + 11         + 11

5x = 3x + 28

Move the constants to the other side

5x = 3x + 28

- 3x -3x

2x = 28

Divide both sides by 2

2x/2 = 28/2

x = 14

Let's move back to the original equations

Substitute x with 14

5(14) - 11

3(14) + 17

Use Order of Operations

5(14) - 11 = 59

3(14) + 17 = 59

Add up both answers

59 + 59 = 118

Step-by-step explanation:

NOW LET'S FIND THE VALUE OF AB

For now, imagine you just have clown and angel fish. 5/9 of the fish are clown, and 4/9 angel. this means that 60 = 5/9, so 1/9 is 12, and so 4/9 is 48. there are 48 angel fish. now ignore the clowns, we have 48 angel fish, which is 4/7, and the other 3/7 is goldfish. if 4/7 = 48, then 1/7  is 12, and so 3/7 is 36. there are 60 clown fish, 48 angel fish and 36 goldfish.