Whakaoti mō x
x=\frac{3}{7}\approx 0.428571429
Graph
Pātaitai
Linear Equation
20x+30=90x
Tohaina
Kua tāruatia ki te papatopenga
20x+30-90x=0
Tangohia te 90x mai i ngā taha e rua.
-70x+30=0
Pahekotia te 20x me -90x, ka -70x.
-70x=-30
Tangohia te 30 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-30}{-70}
Whakawehea ngā taha e rua ki te -70.
x=\frac{3}{7}
Whakahekea te hautanga \frac{-30}{-70} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -10.
Ngā Tauira
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Āhuahanga
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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
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Whakaurunga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}