X x 3 : x +2 x 6 :4 + x : 0,5 + 0,25 + X x1=35
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x+x:0,5+x:0,25+x:0,125=50-x*35
x+x*2+x*4+x*8=50-x*35
x+x*2+x*4+x*8+x*35=50
x*(1+2+4+8+35)=50
x*50=50
x=50:50
x=1
k dg cho mik nha!
6: \(9,5\times4,7+9,5\times4,3+9,5\)
\(=9,5\times\left(4,7+4,3+1\right)\)
\(=9,5\times10=95\)
5: \(32\times1,25\times2,5+0,476+0,524\)
\(=80\times1,25+1\)
=100+1
=101
4: \(3,5\times0,5+3,5\times0,125+3,5\times22,5\times4\)
=3,5x(90+0,5+0,125)
=3,5x90,625
=317,1875
3: \(32\times1,25\times2,5+\frac{54}{10}\times8,7+5,4\times3,3-10,8\)
\(=40\times2,5+5,4\times8,7+5,4\times3,3-5,4\times2\)
=100+5,4x(8,7+3,3-2)
=100+5,4x10
=100+54
=154
2: \(15,25\times0,5+15,25\times0,25+15,25\times0,125+15,25\times6\)
=15,25x(0,5+0,25+0,125+6)
=15,25x6,875
=104,84375
1: 2020x0,56+0,34x6060+8080x0,85+2020x5,02
=2020x0,56+2020x1,02+2020x3,4+2020x5,02
=2020x(0,56+1,02+3,4+5,02)
=2020x10
=20200
`@` `\text {Ans}`
`\downarrow`
`a,`
\(x \div 0,1 + x \div 0,25 - 35 = 35\)
`\Rightarrow x * 10 + x * 4 - 35 = 35`
`\Rightarrow x*(10+4) - 35 = 35`
`\Rightarrow 14x - 35 = 35`
`\Rightarrow 14x = 70`
`\Rightarrow x=70/14 =5`
Vậy, `x=5`
`b,`
\(x \div 0,125 - x \div 0,5 = 108\)
`\Rightarrow x * 4/5 - x*2=108`
`\Rightarrow x*(4/5 - 2) = 108`
`\Rightarrow -6/5x = 108`
`\Rightarrow x=108 \div -6/5`
`\Rightarrow x=-90`
Vậy, `x=-90.`
a) x/0,1 + x/0,25 - 35 = 35
x . 10 + x . 4 = 35 + 35
14x = 70
x = 70 : 14
x = 5
a: \(24,8:0,5+24,8\cdot3+24,8:0,2\)
\(=24,8\cdot2+24,8\cdot3+24,8\cdot5\)
\(=24,8\left(2+3+5\right)\)
\(=24,8\cdot10=248\)
b: \(19,5+19,5\cdot3+19,5:0,5+19,5:0,25\)
\(=19,5+19,5\cdot3+19,5\cdot2+19,5\cdot4\)
\(=19,5\left(1+3+2+4\right)\)
\(=19,5\cdot10=195\)
c: \(121,07\cdot4+121,07:0,25+121,07:0,5\)
\(=121,07\cdot4+121,07\cdot4+121,07\cdot2\)
\(=121,07\left(4+4+2\right)\)
\(=121,07\cdot10=1210,7\)
x+x:0.5+x:0.25+x:0.125=50-x x 35
x:(1+0.5+0.25+0.125)=50-x x 35
x:1.875=50-35x
x:1.875-50+35x=0
x:1.875+35x=50
bạn tự giải tiếp nha
k cho mh nha
Nhóc Lạnh Lùng
Không phải, làm thế này này:
x+x:0.5+x:0.25+x:0.125=50-xx35
xx1+xx2+xx4+xx8=15
xx(1+2+4+8) =15
xx15 =15
x=15:15
x=1
\(x\cdot3:x+2\cdot6:4+x:0,5+0,25+x\cdot1=35\)
=>\(3+3+2x+0,25+x=35\)
=>3x+6,25=35
=>3x=35-6,25=28,75
=>\(x=\dfrac{28.75}{3}=\dfrac{115}{12}\)