A=17x(1313/5151+1111/3434):177/12
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17 x ( 1313/5151 + 1111/3434) : 177/12
= 17 x ( 13/51 + 11/34 ) : 59/4
= 17 x 59/102 : 59/4
= (17 x 59/102) : 59/4
= 59/6 : 59/4
=2/3
\(A=17\cdot\left(\frac{1313}{5151}+\frac{1111}{3434}\right)\div\frac{177}{12}\)
\(A=17\cdot\frac{59}{102}\div\frac{177}{12}\)
\(A=\frac{59}{6}\div\frac{177}{12}\)
\(A=\frac{2}{3}\)
\(a=17.\left(\frac{1313}{5151}+\frac{1111}{3434}\right):\frac{177}{12}\)
\(a=17.\left(\frac{13}{51}+\frac{11}{34}\right):\frac{177}{12}\)
\(a=17.\frac{59}{102}:\frac{177}{12}\)
\(a=\frac{59}{6}:\frac{59}{4}\)
\(a=\frac{2}{3}\)
thấy dúng thì k mik nha!!
A = 17 \(\times\) ( \(\dfrac{1313}{5151}\) + \(\dfrac{1111}{3434}\)): \(\dfrac{177}{12}\)
A = 17 \(\times\) (\(\dfrac{1313:101}{5151:101}\) + \(\dfrac{1111:101}{3434:101}\)) : \(\dfrac{177}{12}\)
A = 17 \(\times\)( \(\dfrac{13}{51}\) + \(\dfrac{11}{34}\)): \(\dfrac{177}{12}\)
A = 17 \(\times\) (\(\dfrac{13\times2}{51\times2}\)+ \(\dfrac{11\times3}{34\times3}\)) : \(\dfrac{177}{12}\)
A = 17 \(\times\)( \(\dfrac{26}{102}\) + \(\dfrac{33}{102}\)): \(\dfrac{177}{12}\)
A = 17 \(\times\) \(\dfrac{59}{102}\): \(\dfrac{177}{12}\)
A = \(\)\(\dfrac{59}{6}\) \(\times\) \(\dfrac{12}{177}\)
A = \(\dfrac{2}{3}\)
Ta có 17x(1313/5151+1111/3434):177/12
=17x(13/51+11/34):59/4
=17x(26/102+33/102)x4/59
=17x59/102x4/59
=59/6x4/59
=4/6
=2/3
k cho mình nha
\(17\times\left(\frac{1313}{5151}+\frac{1111}{3434}\right)\div\frac{177}{12}\)
\(=17\times\left(\frac{13}{51}+\frac{11}{34}\right)\div\frac{177}{12}\)
\(=17\times\frac{59}{102}\div\frac{177}{12}\)
\(=\frac{59}{6}\div\frac{177}{12}\)
\(=\frac{59}{6}\times\frac{12}{177}\)
\(=\frac{2}{3}\)
17 \(\times\) ( \(\dfrac{1313}{5151}\) + \(\dfrac{1111}{3434}\)) : \(\dfrac{117}{512}\)
= 17 \(\times\) ( \(\dfrac{1313:101}{5151:101}\) + \(\dfrac{1111:101}{3434:101}\)) : \(\dfrac{117}{512}\)
= 17 \(\times\) ( \(\dfrac{13}{51}\) + \(\dfrac{11}{34}\)): \(\dfrac{117}{512}\)
= 17 \(\times\) \(\dfrac{59}{102}\) \(\times\) \(\dfrac{512}{117}\)
= \(\dfrac{1003}{102}\) \(\times\) \(\dfrac{512}{117}\)
= \(\dfrac{15104}{351}\)
(2x+1).(y2-5)=12=1.12=12.1=6.2=2.6=3.4=4.3=...(cả số âm)
Rồi bạn lập bảng
VD:
2x+1 | 1 |
y2-5 | 12 |
x | 0 |
y | \sqrt{17}17loại |
`(2x+1)(y^2-5)=12=1.12=(-1).(-12)=2.6=(-2).(-6)=3.4=(-3).(-4)`
`2x+1` | `1` | `12` | `-1` | `-12` | `3` | `4` | `-3` | `-4` | `2` | `6` | `-2` | `-6` |
`y^2-5` | `12` | `1` | `-12` | `-1` | `4` | `3` | `-4` | `-3` | `6` | `2` | `-6` | `-2` |
`x` | `0` | `5,5` | `-1` | `-6,5` | `1` | `1,5` | `-2` | `-2,5` | `0,5` | `2,5` | `-1,5` | `-3,5` |
`y` | `\sqrt{17}` | L | L | L | `3` | L | `1` | L | L | L | L | L |
Vì `x;y` là số tự nhiên `=>x=1;y=3`