x+100=200
x-100=200-300
tim x biet
a)2^x+2 -2^x=96
b)x-(50x/100+25x/200)=111/4
c) (x-5).30/100=200x/100+5
a) \(2^{x+2}-2^2=96\)
<=> \(2^x.2^2-2^x=96\)
<=> \(2^x\left(4-1\right)=96\)
<=> \(3.2^x=96\)
<=> \(2^x=32\)
<=> \(2^x=2^5\)
<=> x = 5
b, \(x-\left(\frac{50x}{100}+\frac{25x}{200}\right)=11\frac{1}{4}\)
\(\Rightarrow x-\left(\frac{1x}{2}+\frac{1x}{8}\right)=\frac{45}{4}\)
\(\Rightarrow x-\left(\frac{4x}{8}+\frac{1x}{8}\right)=\frac{45}{4}\)
\(\Rightarrow x-\frac{5x}{8}=\frac{45}{4}\)
\(\Rightarrow\frac{8x}{8}-\frac{5x}{8}=\frac{45}{4}\)
\(\Rightarrow\frac{3x}{8}=\frac{45}{4}\Rightarrow x=\frac{45}{4}\div\frac{3}{8}=30\)
Vậy x = 30
b) 200 x 4 = ...... 300 x 2 = ......
200 x 2 = ...... 300 x 3 = ......
400 x 2 = ...... 500 x 1 = ......
100 x 4 = ...... 100 x 3 = ......
b) 200 x 4 = .800..... 300 x 2 = ..600....
200 x 2 = .400..... 300 x 3 = ...900...
400 x 2 = ...800... 500 x 1 = ..500....
100 x 4 = ..400.... 100 x 3 = .300.....
Tính.
a) 200 mm + 100 mm 300 mm – 100 mm 200 mm x 3 600 mm : 3
b) 300 g + 200 g 200 g × 5 500 g – 300g 1000g : 5
c) 400 ml + 300 ml 800 ml : 4 700 ml – 300 ml 200 ml x 4
a) 200 mm + 100 mm = 300 mm 300 mm – 100 mm = 200 mm |
200 mm x 3 = 600 mm 600 mm : 3 = 200 mm |
b) 300 g + 200 g = 500 g | 200g x 5 = 1 000g | 500g – 300g = 200g | 1 000g : 5 = 200g |
c)
400 ml + 300 ml = 700 ml
800 ml : 4 = 200 ml
700 ml – 300 ml = 400 ml
200 ml x 4 = 800ml
x+100=200-300
x+300=200
x+100=-100
x = -100 - 100
x = -200
x+300=200
x = 200-300
x =-100
k nha!
x+100=-100
x=-100-100-200
x+300=200
x=200-300
x=-100
a)x+100=200-300
x+100=(-100)
x =(-100)-100
x =(-200)
b)x+300=200
x =200-300
x =-100
Tìm X,biết:
100 + 100 < 300 - X < 200 + 200
X=0
Tick nha !Nguyễn Khánh Duy
\(X\)= Các số tự nhiên từ 0 đến 99
x+100=200-200+100-100+300
ai k mk ru mk k lai
x+100=200-200+100-100+300
x+100=300
x=300-100
x=200
tk mk mk tk lại
x + 100 = 200 - 200 + 100 - 100 + 300
x + 100 = 300
x = 300 - 100
x = 200
Vậy số tự nhiên x cần tìm là 200
x+100=200-200+100-100+300
x+100=0+0+300
x-200=0+300
x-200=300
x=300+200
x=500
x+100=200+300
x-100=200
ai k mk
x + 100 = 200 + 300
x + 100 = 500
x = 500 - 100
x = 400
x - 100 = 200
x = 200 + 100
x = 300
[x-5] x 30/100= 200x : 100+5
(x-5) x \(\frac{30}{100}\)= 200x : 100 + 5
(x-5) x \(\frac{3}{10}\)= 200x : 100 + 5
\(\frac{x.3-15}{10}\)= 2x + 5
\(\frac{x.3-15}{10}-2x=5\)
\(\frac{x.3-15}{10}-\frac{20x}{10}=5\)
\(\frac{3x-15-20x}{10}=5\)
3x - 20x - 15 = 50
-17x - 15 = 50
-17x = 65
x = 65 : -17
x = \(\frac{-65}{17}\)
x + 100 + 100 = 200 + 300
x + 100 + 100 = 200 + 300
x + 200 = 500
x = 500 - 200
x = 300
x + 100 + 100 = 200 + 300
x + 100 + 100 = 500
x =500-100-100
x = 300
k nha