Answer:
According to Bodmas rule, if an expression contains brackets ((), {}, []) we have to first solve or simplify the bracket followed by of (powers and roots etc.), then division, multiplication, addition and subtraction from left to right.
Step-by-step explanation:
-4x + 20 +3a - 21
3a - 4x - 1
{(1/2)x-3}-4=20
That is your answer.
27,9
x + y =36
x - y = 16
27 + 9 = 36
27 - 9 = 16
Answer: i think it’s -3
