Whakaoti mō f
f = -\frac{7}{4} = -1\frac{3}{4} = -1.75
Tohaina
Kua tāruatia ki te papatopenga
f\times 3=\left(f+1\right)\times 7
Tē taea kia ōrite te tāupe f ki tētahi o ngā uara -1,0 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te f\left(f+1\right), arā, te tauraro pātahi he tino iti rawa te kitea o f+1,f.
f\times 3=7f+7
Whakamahia te āhuatanga tohatoha hei whakarea te f+1 ki te 7.
f\times 3-7f=7
Tangohia te 7f mai i ngā taha e rua.
-4f=7
Pahekotia te f\times 3 me -7f, ka -4f.
f=\frac{7}{-4}
Whakawehea ngā taha e rua ki te -4.
f=-\frac{7}{4}
Ka taea te hautanga \frac{7}{-4} te tuhi anō ko -\frac{7}{4} mā te tango i te tohu tōraro.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
Arithmetic
699 * 533
Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Whakarerekētanga
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}