Answer:
13
Step-by-step explanation:
|-20| = 20 (anything with | | is absolute value, which is always positive), |7| = 7, 20 - 7 = 13.
quick tip: when you see something like -|#|, that would be negative, but if you saw |-#|, it would be positive.
hope it helps lol
x = 4
Explanation:
Given the expression;
Add 4 to both sides
Square both sides
Hence the value of x is 4
20
if you want a explanation ask for it :)