Answer:
x/9 + 3 = 7
x = 36
Explanation:
solving an equation with one missing variable
step 1: subtract 3 from both sides of the equation
ex: x/9 + 3 - 3 = 7 - 3 (x/9 = 4)
step 2: multiply both side of the equation by 9
ex: x = 36
step 3: to check your answer input the answer of x from the last problem which was 36 and input it in the original equation
ex: x/9 + 3 = 7 (36/9 + 3 = 7)
4 + 3 = 7
7 = 7 (if both sides of the equation have the same number like 7 = 7 then your answer is true)