Question

9-3(a-1)=4+a

Answer 1

\[9-3(a-1)=4+a\]\[9-3a+3=4+a\]\[-3a+12=4+a\]\[-4a=-8\]\[a=2\]

Answer 2

are you familiar with one of these:
Please Excuse My Dear Aunt Sally ?
PEDMAS
BEDMAS

Answer 3

yea

Answer 4

You need solve step by step
in each step performing an operation on two numbers
in the following order

Paranthesis <--- start with what's inside these
Exponents <---- then do these (if any)
Mutiplication Division <---- next, do these
Addition Subtraction <---- finally these