3/3 the answer but i have to ask a question so please give this a good rating or something
The correct answer of

if x=4 is 272.
to solve the equation if x equals 4, you must substitute the x of the 4.

then solve by order of operations.
solve what is inside the parentheses first

then do the multiplication of the factors

then the final step, adding, to get the solution of 272
180=90+50+x
180=140+x
x=180-140=40
X=40