TÌm x biết:
$x$ = $\frac{\frac{5}{22} + \frac{3}{13} – \frac{1}{2}}{\frac{4}{13} – \frac{2}{11} + \frac{3}{2}}$
5* + CTLHN
TÌm x biết: $x$ = $\frac{\frac{5}{22} + \frac{3}{13} – \frac{1}{2}}{\frac{4}{13} – \frac{2}{11} + \frac{3}{2}}$ 5* + CTLHN
By Harper
Đáp án + giải thích bước giải :
`x = (5/22 + 3/13 – 1/2)/(4/13 – 2/11 + 3/2)`
`-> x = ( (5/22 – 1/2) + 3/13)/( (-2/11 + 3/2) + 4/13)`
`-> x = (-6/22 + 3/13)/(29/22 + 4/13)`
`-> x = (-6/143)/(465/286)`
`-> x = (-4)/155`
Đáp án:
`x=-4/155`
Giải thích các bước giải:
`x=(5/22+3/13-1/2)/(4/13-2/11+3/2)`
`=>x=(5/22+3/13-1/2)/(4/13-4/22+3/2)`
`=>x=((5/22-1/2)+3/13)/((-4/22+3/2)+4/13)`
`=>x=((5/22-11/22)+3/13)/((-4/22+33/22)+4/13)`
`=>x=(-6/22+3/13)/(29/22+4/13)`
`=>x=(-6/143)/(465/286)`
`=>x=-6/143 : 465/286`
`=>x=-6/143 . 286/465`
`=>x=-4/155`
Vậy `x=-4/155`