100+200=300nha

k mik đi mik đang âm điểm

=300 nha

300

k mình nha rùi mk kb

100+200=300

100+200+300=600

k mik nhé ^_^

100+200+300

=300+300

=300x2

=600

100+100=200

200+200=400

700+700=1400

100 + 100 = 200

200 + 200 = 400

400 + 400 = 800

700 + 700 = 1400

100+200*35:7

=100+1000

=1100

bạn tk ....

100 + 200 x 5 = 100 + 1000 = 1100

100+200+500=800

Mik k cho bạn ,Nguyễn ,Duy Hoàng rủi,k cho mik đi!

100 + 200 + 500 = 800

\(x+100=200\cdot10\)

\(x+100=2000\)

\(x=2000-100\)

\(x=1900\)

K mình nhaNobita

x + 100 = 200 x 10 

x + 100 = 2000 

         x = 2000 - 100 

         x = 1900

x + 100 = 300 + 200

x + 100 = 500

          x = 500 - 100

          x = 400

ai k mk mk k l

ại ^_^

x + 100 = 300 + 200 

x + 100 = 500

x          = 500 - 100

x          =   400

ai tk mk mk tk lại 

\(\frac{4}{3}B=-1+\frac{3}{4}-\left(\frac{3}{4}\right)^2+...+\left(\frac{3}{4}\right)^{99}\)

\(B=-\frac{3}{4}+\left(\frac{3}{4}\right)^2-\left(\frac{3}{4}\right)^3+...+\left(\frac{3}{4}\right)^{100}\)

\(\Rightarrow\)\(\frac{7}{3}B=-1+\left(\frac{3}{4}\right)^{100}\Rightarrow B=\frac{\left(\frac{3}{4}\right)^{100}-1}{\frac{7}{3}}=\frac{3\left[\left(\frac{3}{4}\right)^{100}-1\right]}{7}\)

Như vầy đủ gọn chưa bạn?