Question

the root of the equation 7x - 1 = 21 is​

Answer 1

Step-by-step explanation:

The root of the equation 7(x-1)=21 is

Hence the root of the equation is 4.

Answer 2

Answer:

hi mate

First, divide each side of the equation by 7 to isolate the x2 term while keeping the equation balanced:

7x27=−217

7x27=−3

x2=−3

Next, we would take the square root of each side of the equation to solve for x while keeping the equation balanced.

However, there is no Real solution for the square root of a negative number, in this case the √−3

Therefore, there is no real solution or the solution set is the empty or null set: {∅}

Step-by-step explanation:

mark me as brainliest and follow me plz.