Given that the equation is 6(2x-11) + 15 = 21
Explanation-
Step 1 - In this, we will multiply by 6 inside the bracket following the distributive property.
12x - 66 + 15 = 21
Step 2 - Now, we will subtract 66 from 15
12x - 51 = 21
Step 3 - Now, we will shift 51 to the other side of the = sign and its sign will get changed and then we will add them as
12x = 21 + 51
12x = 72
Step 4 - Here we will divide 72 by 12 and we will have the required answer.
x = 72/12 = 6
Therefore, the final answer is 6
