Respuesta :

Answer:

B. 13

Step-by-step explanation:

Let's solve your equation step-by-step.

7√x−4−6=15

Step 1: Add 6 to both sides.

7√x−4−6+6=15+6

7√x−4=21

Step 2: Divide both sides by 7.

7√x−4

7

=

21

7

√x−4=3

Step 3: Solve Square Root.

√x−4=3

x−4=32(Square both sides)

x−4=9

x−4+4=9+4(Add 4 to both sides)

x=13

amazemerlinmagi

Answer:

x = 13

Step-by-step explanation:

[tex]7 \sqrt{x - 4} = 15 + 6 \\ 7 \sqrt{x - 4} = 21 \\ \sqrt{x - 4 =} = 3 \\ x - 4 = 9 \\ x = 13[/tex]

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