Whakaoti mō x
x=-\frac{5}{7}\approx -0.714285714
Graph
Tohaina
Kua tāruatia ki te papatopenga
1-2x-2=2\left(x+2\right)+3x
Hei kimi i te tauaro o 2x+2, kimihia te tauaro o ia taurangi.
-1-2x=2\left(x+2\right)+3x
Tangohia te 2 i te 1, ka -1.
-1-2x=2x+4+3x
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+2.
-1-2x=5x+4
Pahekotia te 2x me 3x, ka 5x.
-1-2x-5x=4
Tangohia te 5x mai i ngā taha e rua.
-1-7x=4
Pahekotia te -2x me -5x, ka -7x.
-7x=4+1
Me tāpiri te 1 ki ngā taha e rua.
-7x=5
Tāpirihia te 4 ki te 1, ka 5.
x=\frac{5}{-7}
Whakawehea ngā taha e rua ki te -7.
x=-\frac{5}{7}
Ka taea te hautanga \frac{5}{-7} te tuhi anō ko -\frac{5}{7} mā te tango i te tohu tōraro.
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