Whakaoti mō x
x = \frac{15}{8} = 1\frac{7}{8} = 1.875
Graph
Tohaina
Kua tāruatia ki te papatopenga
45-12x-4x=15
Tangohia te 4x mai i ngā taha e rua.
45-16x=15
Pahekotia te -12x me -4x, ka -16x.
-16x=15-45
Tangohia te 45 mai i ngā taha e rua.
-16x=-30
Tangohia te 45 i te 15, ka -30.
x=\frac{-30}{-16}
Whakawehea ngā taha e rua ki te -16.
x=\frac{15}{8}
Whakahekea te hautanga \frac{-30}{-16} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -2.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
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whārite paerangi
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Arithmetic
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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
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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}