Toán Lớp 6: Tính hợp lí:1-4-7+10+13-16-19+22-25+28+31-34+37
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: Tính hợp lí:1-4-7+10+13-16-19+22-25+28+31-34+37
Comments ( 2 )
1-4-7+10+13-16-19+22-25+28+31-34+37
=1−4−7+10+13−16−19+22−25+28+31−34+37
=(1−4−7+10)+(13−16−19+22)−(25-28-31+34)+37
=0+0-0+37
=37
1-4-7+10+13-16-19+22-25+28+31-34+37
=(1-4-7+10)+(13-16-19+22)+(-25+28+31-34)+37
=0+0+0+37
=37