Answer:
x = 3
Step-by-step explanation:

56 is not equal to 30
Answer:
so you would replace all r with 2 which is 2+q-2
then replace the q with 6 so it would be: r+6-r
combined both of these to get
2+6-2
which would equal to 6
add the 2 and the 6 to get 8
then subtract 2 to get 6
158, because due to PEMDAS you would do all the functions in the parenthesis first, then you would move on to multiplication, and finally you would find the sum of the equation