Răspuns:
Explicație pas cu pas:
a) (580-40:2x4):25+550<600
(580-20x4):25+550<600
(580-80):25+550<600
500 :25 + 550<600
20 + 550 <600
570 < 600 => adevărat
c) [(3 +47+50) :4+91]:2 >50
[(50 + 50) :4 +91 ] : 2 >50
( 100 : 4 + 91 ) : 2 > 50
( 25 + 91 ) : 2 > 50
116 : 2 > 50
58 > 50 => adevărat
b) 300 -2x[5x(70-78:3)]:8>250
300-2x[5x(70-26)]:8>250
300-2x(5 x 44) :8>250
300-2x220:8>250
300- 440:8>250
300-55>250
235 >250=> fals
d)[100x(25+50x4)+500]:10<30
[100x(25+200)+500]:10<30
(100x225+500):10<30
(22500+500) :10<30
23000 :10<30
2300<30