400 : { 5. [ 360 - ( 290 + 2.52 ) ] }
=400:{5.[360-(290+50)]}
=400:[5.(360-340)]
=400:(5.20)
=400:100
=4
TÍCH NHA
400: {5.[360-(290+2.52)]}
=400: {5.[360-(290+2.25)]}
=400: {5.[360-(290+50)]}
=400: {5.[360-340]}
=400: {5.20}
=400:100
=4
\(400:\left\{5.\left[360-\left(290+2.5^2\right)\right]\right\}\)
\(=400:\left\{5.\left[360-\left(290+50\right)\right]\right\}\)
\(=400:\left\{5.\left[360-340\right]\right\}\)
\(=400:\left\{5.20\right\}\)
\(=400:100\)
\(=4\)
400 : { 5. [ 360 - ( 290 + 2.52 ) ] }
=400:{5.[360-(290+50)]}
=400:[5.(360-340)]
=400:(5.20)
=400:100
=4