Whakaoti mō x
x = \frac{55}{4} = 13\frac{3}{4} = 13.75
Graph
Tohaina
Kua tāruatia ki te papatopenga
6\times 4x-70=20x-15
Me whakarea ngā taha e rua o te whārite ki te 30, arā, te tauraro pātahi he tino iti rawa te kitea o 5,3,2.
24x-70=20x-15
Whakareatia te 6 ki te 4, ka 24.
24x-70-20x=-15
Tangohia te 20x mai i ngā taha e rua.
4x-70=-15
Pahekotia te 24x me -20x, ka 4x.
4x=-15+70
Me tāpiri te 70 ki ngā taha e rua.
4x=55
Tāpirihia te -15 ki te 70, ka 55.
x=\frac{55}{4}
Whakawehea ngā taha e rua ki te 4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
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\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}