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Whakaoti mō x
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Tohaina

7x-14+3=4\left(x+3\right)+7
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x-2.
7x-11=4\left(x+3\right)+7
Tāpirihia te -14 ki te 3, ka -11.
7x-11=4x+12+7
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te x+3.
7x-11=4x+19
Tāpirihia te 12 ki te 7, ka 19.
7x-11-4x=19
Tangohia te 4x mai i ngā taha e rua.
3x-11=19
Pahekotia te 7x me -4x, ka 3x.
3x=19+11
Me tāpiri te 11 ki ngā taha e rua.
3x=30
Tāpirihia te 19 ki te 11, ka 30.
x=\frac{30}{3}
Whakawehea ngā taha e rua ki te 3.
x=10
Whakawehea te 30 ki te 3, kia riro ko 10.