## I cannot solve the equation. √(7d+1)-4=11

Question

I cannot solve the equation.
√(7d+1)-4=11

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7 hours 2021-07-22T09:36:51+00:00 2 Answers 0 views 0

1. 9514 1404 393

d = 32

Step-by-step explanation:

Add 4, then square, and solve the resulting linear equation.

√(7d +1) = 15

7d +1 = 225 . . . . . . square both sides

7d = 224 . . . . . . . . subtract 1

d = 32 . . . . . . . . . . divide by 7