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2.x - 12.x = 0
=> 2 - 12 . x = 0
=> - 10.x = 0
=> x = 0 : ( - 10 )
=> x = 0
????
2 x X x 3 - 160 = 710
=> 2 x 3 x X = 710 + 160 = 870
=> 6 x X = 870
=> X = 870 : 6
=> X = 145
Vậy ...
Muốn ủng hộ thì ti.ck đúng mk nha =)
2 . x . 3 - 160 = 710
=> x . 6 - 160 = 710
x . 6 = 710 + 160
x . 6 = 870
x = 870 : 6
x = 145
\(x+\frac{x}{3}=24\)
\(\frac{3x}{3}+\frac{x}{3}=24\)
\(\frac{4x}{3}=24\)
4x=24x3
4x=72
x=72:4
x=18
x+\(\frac{x}{3}\)=24
\(\frac{3x}{3}\)+\(\frac{x}{3}\)=24
\(\frac{3x+x}{3}\)=24
\(\frac{4x}{3}\)=24
4x=24x3
x=18
\(\frac{5}{3}-\frac{1}{3}:\left(1-x\cdot\frac{1}{3}\right)=\frac{7}{6}\)
=> \(\frac{1}{3}:\left(1-x\cdot\frac{1}{3}\right)=\frac{5}{3}-\frac{7}{6}\)
=> \(\frac{1}{3}:\left(1-x\cdot\frac{1}{3}\right)=\frac{1}{2}\)
=> \(\left(1-x\cdot\frac{1}{3}\right)=\frac{1}{3}:\frac{1}{2}=\frac{1}{3}\cdot2=\frac{2}{3}\)
=> \(1-\frac{x}{3}=\frac{2}{3}\)
=> \(\frac{x}{3}=1-\frac{2}{3}=\frac{1}{3}\)
=> x = 1
\(3-\left(x:\frac{1}{2}+\frac{3}{2}\right)-\frac{1}{4}=\frac{1}{2}\)
=> \(3-\left(x:\frac{1}{2}+\frac{3}{2}\right)=\frac{1}{2}+\frac{1}{4}=\frac{3}{4}\)
=> \(x:\frac{1}{2}+\frac{3}{2}=3-\frac{3}{4}=\frac{9}{4}\)
=> \(x:\frac{1}{2}=\frac{9}{4}-\frac{3}{2}\)
=> \(x:\frac{1}{2}=\frac{3}{4}\)
=> \(x=\frac{3}{4}\cdot\frac{1}{2}=\frac{3}{8}\)
\(\frac{5}{3}-\frac{1}{3}:\left(1-x\times\frac{1}{3}\right)=\frac{7}{6}\)
\(\frac{1}{3}:\left(1-x\times\frac{1}{3}\right)=\frac{5}{3}-\frac{7}{6}\)
\(\frac{1}{3}:\left(1-x\times\frac{1}{3}\right)=\frac{1}{2}\)
\(1-x\times\frac{1}{3}=\frac{1}{3}:\frac{1}{2}\)
\(1-x\times\frac{1}{3}=\frac{2}{3}\)
\(x\times\frac{1}{3}=1-\frac{2}{3}\)
\(x\times\frac{1}{3}=\frac{1}{3}\)
\(x=\frac{1}{3}:\frac{1}{3}\)
\(x=1\)
\(3-\left(x:\frac{1}{2}+\frac{3}{2}\right)-\frac{1}{4}=\frac{1}{2}\)
\(3-\left(x:\frac{1}{2}+\frac{3}{2}\right)=\frac{1}{2}+\frac{1}{4}\)
\(3-\left(x:\frac{1}{2}+\frac{3}{2}\right)=\frac{3}{4}\)
\(x:\frac{1}{2}+\frac{3}{2}=3-\frac{3}{4}\)
\(x:\frac{1}{2}+\frac{3}{2}=\frac{9}{4}\)
\(x:\frac{1}{2}=\frac{9}{4}-\frac{3}{2}\)
\(x:\frac{1}{2}=\frac{3}{4}\)
\(x=\frac{3}{4}\times\frac{1}{2}\)
\(x=\frac{3}{8}\)
a) x . 15 - x : 0,1 = 2
x . 15 - x . 10 = 2
x . ( 15 - 10 ) = 2
x . 5 = 2
x = 2 : 5
x = 0,4
b) x + x : 2 = 0,36
x . ( 1 + \(\frac{1}{2}\)) = 0,36
x . \(\frac{3}{2}\)= 0,36
x = 0,36 : \(\frac{3}{2}\)
x = 0,24
\(3\frac{3}{11}x27\frac{27}{46}x1\frac{6}{17}x2\frac{4}{9}=\frac{34x1269x23x22}{11x46x17x9}=\frac{2x17x141x9x23x2x11}{11x23x17x9}=282\)
Tim x biet /x-3/+/3x+4/=/2x+1/
Giup to vs! Cam on cac cau nhieu lam
Tra loi nhanh nhe to dang can gap
0, 9 x 95 + 1, 8 x 2 + 0, 9
= 0,9 x 95 + 0,9 x 2 x 2 + 0,9
= 0,9 x 95 + 0,9 x 4 + 0,9
= 0,94 x ( 95 + 4 + 1 )
= 0,94 x 100
= 94
Nhớ k cho mk nha ^_^
=0.9 x 95 +0.9 x 2 x 2 + 0.9 x 1
=0.9 x (95+4+1)
=0.9 x 100
=90
`3-2x+17=0`
`(3+17)-2x = 0`
`20 - 2x = 0`
`2x = 20`
`x = 20 :2`
`x = 10`
____________
`4x = 0`
`x=0:4`
`x=0`
_____________
`37 +2.(x-3)=67`
`2.(x-3) = 67 - 37`
`2.(x-3) = 30`
`x-3 = 30 : 2`
`x-3 = 15`
`x=15+3`
`x=18`
+) 3 - 2x + 17 = 0
20 - 2x = 0
2x = 20
x = 10
+) 4x = 0
x = 0 : 4
x = 0
+) 37 + 2(x-3)=67
2(x-3)=67-37=30
x-3=30:2=15
x=15+3=18