Whakaoti mō x
x=-20
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\left(5x+4\right)+12=9x
Me whakarea ngā taha e rua o te whārite ki te 4, arā, te tauraro pātahi he tino iti rawa te kitea o 2,4.
10x+8+12=9x
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 5x+4.
10x+20=9x
Tāpirihia te 8 ki te 12, ka 20.
10x+20-9x=0
Tangohia te 9x mai i ngā taha e rua.
x+20=0
Pahekotia te 10x me -9x, ka x.
x=-20
Tangohia te 20 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
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