Question

1 tính một cách hợp lý nếu có thể

A=[-506+732-(-2000)]-(506-1732)

B=1037+{743-[1031-(+57)]}

C=(125x73-125x75):(-25x2)

D=-25x(35+147)+35x(25+147)

E=125x9x(-4)x(-8)x25x7

Answer 1

A=[-506+732-(2000)]-(506-1732)

A=[226+2000]-226

A=(226-226)+2000

A=2000

B=1037+{743-[1031-(+57)]}

B=1037+743-1031+57

B=(1037-1031)+(743+57).

B=6+800=806

C=(125.73-125.75):(-25.2)

C=125.(73-75):(-50)

C=125.(-2):(-50)

C=-250:(-50)=5

D=-25.(35+147)+35.(25+147)

D=-25.35+(-25).147+35.25+35.147

D=35(-25+25)+147(-25+35)

D=147.10=1470

E=125.9.(-4).(-8).25.7

E=125.9.4.8.25.7

E=(125.8).(25.4).(9.7)

E=1000.100.63

E=6300000

Answer 2

Thank you ^^