= ( 60 + 50+40+30+20+10 ) x 2000 + 1500

= 210 x 2000 + 1500

=  420000 + 1500

= 421500

= 421500 nha bn, nhớ k mk nha

=421500

x + 40 = 50 + 50 + 50

x+40   =150

x        = 150-40

x         =110

Chúc bạn học tốt!k mình nha!

x + 40 = 150

x         = 150 - 40

x         = 110

x + 40 = 50 + 50 + 50

x + 40 = 100 + 50

x + 40 = 150

x         = 150 - 40

x         = 110

2500

2400

1000

50 x 50=2500

60x40=2400

50x20=1000

tick mk nha bạn  

2500

2400

1000

\(\frac{x+10}{90}+\frac{x+20}{80}+\frac{x+30}{70}+\frac{x+40}{60}+\frac{x+50}{50}=-5\)

<=> \(\frac{x+10}{90}+1+\frac{x+20}{80}+1+\frac{x+30}{70}+1+\frac{x+40}{60}+1+\frac{x+50}{50}+1=0\)

<=> \(\frac{x+100}{90}+\frac{x+100}{80}+\frac{x+100}{70}+\frac{x+100}{60}+\frac{x+100}{50}=0\)

<=> \(\left(x+100\right)\left(\frac{1}{90}+\frac{1}{80}+\frac{1}{70}+\frac{1}{60}+\frac{1}{50}\right)=0\)

<=> x + 100 = 0 

<=> x = -100

Vậy x = -100

X + 35 = 90

      X  =  90 - 35

      X  = 55 NHA BN

x + 35 = 90 

x         = 90 - 35 

x         = 55

chúc bạn được nhìu điểm k nha !

\(x+35=40+50\)

\(x+35=90\)

           \(x=90-35\)

           \(x=55\)