Whakaoti mō x
x=16
Graph
Tohaina
Kua tāruatia ki te papatopenga
9x-12=4\left(2x+6\right)-20
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 3x-4.
9x-12=8x+24-20
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te 2x+6.
9x-12=8x+4
Tangohia te 20 i te 24, ka 4.
9x-12-8x=4
Tangohia te 8x mai i ngā taha e rua.
x-12=4
Pahekotia te 9x me -8x, ka x.
x=4+12
Me tāpiri te 12 ki ngā taha e rua.
x=16
Tāpirihia te 4 ki te 12, ka 16.
Ngā Tauira
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