Whakaoti mō x
x=-260
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.8x+8=x+60
Whakamahia te āhuatanga tohatoha hei whakarea te 0.8 ki te x+10.
0.8x+8-x=60
Tangohia te x mai i ngā taha e rua.
-0.2x+8=60
Pahekotia te 0.8x me -x, ka -0.2x.
-0.2x=60-8
Tangohia te 8 mai i ngā taha e rua.
-0.2x=52
Tangohia te 8 i te 60, ka 52.
x=\frac{52}{-0.2}
Whakawehea ngā taha e rua ki te -0.2.
x=\frac{520}{-2}
Whakarohaina te \frac{52}{-0.2} mā te whakarea i te taurunga me te tauraro ki te 10.
x=-260
Whakawehea te 520 ki te -2, kia riro ko -260.
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