2345-234=2111 (nha)        Ai k mình mình k lại

2345-234=1111 nha bạn

2345-234=2111

a) a+234= 567

=> x= 567-234

=>x= 333

b) x+891= 2345

=> x= 2345-891

=>x= 1454

x + 234 = 567

x = 567 - 234

x = 333

x + 891 = 2345

x = 2345 - 891

x = 1454

k mk nha bạn ơi 

Chúc bạn học tốt !

a)x+234=567

      x=567-234

      x=333

b)x+891=2345

          x=2345-891

          x=1454

k nha 

124/234 < 125/219 < 204/219 < 2345/2345

124/234, 125/219, 204/219, 2345/2345

10+16-13+27=26-13+27=13+27=40

798+291=1089

1029+234=1263

2345+835=3180

234-287=-53

102+296=398

871+293=1164

102+492=594

10 +16-13+29 = 26 - 13 + 29 = 13 + 29 = 42

798+291= 1089
1029+234= 1000 + 29 + 200 + 34 = 1000 + 200 + 29 + 34 = 1200 + 63 = 1263
2345+835= 3180
234-287= -53
102+296= 398
871+293= 1164
102+492= 594

10+.....+29=42

798+291=1089

1029+234=1263

2345+835=3180

234-287=-53

102+296=398

871+293=1164

102+492=594

HOT TỐT!

2345 - 234 + 198 = 2309

2345-234+198

=2111+198

=2309

ket

qua

abgn

2309

nah aban

chuc ban hok tot

125 <125< 204 < 2345

234    219  219    2345 

a/\(-\left(-432-3x\right)+\left(-432-4x+21\right)=-2345\)

\(\Leftrightarrow+432+3x-432-4x+21=-2345\)\(\Leftrightarrow\left[432+\left(-432\right)\right]+\left[\left(-4x\right)+3x\right]+21=-2345\)

\(\Leftrightarrow0+-1x+21=-2345\)\(\Leftrightarrow-1x=-2345-21=-2366\)

\(\Rightarrow x=\left(-2366\right):\left(-1\right)=2366\)

b/\(12x-\left(-3546-3x\right)=\left(2x-234\right)-\left(-678-2x\right)\)

\(\Leftrightarrow12x+3546+3x=2x-234+678+2x\)

\(\Leftrightarrow15x+3546=\left(2x+2x\right)+\left[\left(-234\right)+678\right]\)

\(\Leftrightarrow15x+3546=4x+444\)

\(\Leftrightarrow15x+3546-4x-444=0\)

\(\Leftrightarrow\left(15x-4x\right)+\left(3546-444\right)=0\)

\(\Leftrightarrow11x+3102=0\)

\(\Leftrightarrow11x=0-3102=-3102\)

\(\Rightarrow x=\left(-3102\right):11=-282\)