x= -3
step-by-step explanation:
step 1: simplify brackets
4 - x - 1 = 6
step 2: simpilfy
3 - x = 6
step 3: subtract 3 from both sides
-x = 6 - 3
step 4: simpilfy 6 - 3
-x = 3
step 5: multiply both sides by -1
x = -3
answer: $34.31
$11.99 x 3 = $35.97
$35.97 - 10% = $32.37
$32.37 + 6% = $34.31
b) 36
18 times 2 is 36