phân số ak?

=126/-56*2+-8/-56*2

=2*(126/-59+-8/-59)=-2*2=-4

\(\frac{-11}{18}+x=\frac{-5}{18}\)

\(x=\frac{-5}{18}-\frac{-11}{18}\)

\(x=\frac{1}{3}\)

x = 1/3 nha bạn 

ủng hộ mình tich nhé

C1: \(\frac{4}{7}+\frac{4}{7}=\frac{8}{7}\)

C2 \(\frac{6}{11}\div\frac{-3}{7}=\frac{6}{11}\times\frac{-7}{3}=\frac{-14}{11}\)

C3\(\frac{-1}{49}\times\frac{7}{11}=\frac{-7}{539}\)

C4 \(\frac{-201}{73}+\frac{55}{73}+\frac{-205}{79}+\frac{47}{79}=\frac{-2}{1}+\frac{-2}{1}=-4\)

góc cần tìm ..ou= 80/2=40< bị liệt phím rét>

/a-1/=0 s/ra :a-1=0 s/ra a=1

C10  bOc= 85 <25+[160-50)/2]>

Trả lời:

\(\frac{112}{71}+\frac{-17}{-83}-\frac{-41}{-71}-\frac{-66}{83}\)

=\(\frac{112}{71}+\frac{17}{83}-\frac{41}{71}+\frac{66}{83}\)

\(=\frac{112}{71}-\frac{41}{71}+\frac{17}{83}+\frac{66}{83}\)

\(=1+1\)

\(=2\)

Tk mk nha!

5;25;20;5;25;20;5;25;20;5

Chẳng có đáp án nào đúng cả.Đề sai à?

1-a,2-b,3-c,4-d,5-a,6-a,7-c,8-d

Tick nhé 

2014+(2016-2030)

= 2014+2016-2030

=4030-2030

=2000

(26-512)-(226-712)

=26-512-226+712

=(26-226)-(512-712)

=-200+200

=0

\(2014+\left(2016-2030\right)=2014+2016-2030=\left(2014+2016\right)-2030=4030-2030=2000\)

\(\left(26-512\right)-\left(226-712\right)=26-512-226+712=\left(26-226\right)+\left(-512+712\right)=-200++200=0\)