Step-by-step explanation
to solve an equation is to find its solutions, which are the values that fulfill the condition stated by the equation,so we need to isolate x
Step 1
given
a)the addition property of equality states If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal.so we can add 9 in both sides
hence
c) finally , power to sides to power 2
so
therefore, the answer is
B) x=9
I hope this helps you