Question

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Find the value of x in 28x-21-70 (A) 10 B) 7 (C) 14 (D) 13​

Answer 1

Answer:

( D ) 13

Step-by-step explanation:

Step 1:. Transfer 7 to other side

3√28x - 21 = 7

Step 2:. Now, Taking cube of both sides we get

28x - 21 = 343

Step 3: Then,

28x = 343 + 21

28x = 364 => x = 364 / 28

x = 13