B = 600 : { 450 : [450 - ( 4 . 53 - 23 . 52 ) ] }
B = 600 : { 450 : [ 450 - ( 4 . 125 - 8 . 25 ) ] }
B = 600 : { 450 : [ 450 - ( 500 - 200 ) ] }
B = 600 : { 450 : [ 450 - 300 ] }
B = 600 : { 450 : 150 }
B = 600 : 3
B = 200
\(B=600:\left\{450:\left[450-\left(4.5^3-2^3.5^2\right)\right]\right\}\)
\(B=600:\left\{450:\left[450-300\right]\right\}\)
\(B=600:\left(450:150\right)\)
\(B=600:3\)
\(B=200\)
B = 600:(450:(450-(4.125-8.25))) mình không giỏi gõ nên ko biết gõ ngoặc
B=600:(450:(450-(500-200)))
B=600:(450:(450-300))
B=600:(450:150)
B=600:300
B=300