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Whakaoti mō x
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5\times 3x-700=2000-4\times 3x
Me whakarea ngā taha e rua o te whārite ki te 20, arā, te tauraro pātahi he tino iti rawa te kitea o 4,5.
15x-700=2000-4\times 3x
Whakareatia te 5 ki te 3, ka 15.
15x-700=2000-12x
Whakareatia te -4 ki te 3, ka -12.
15x-700+12x=2000
Me tāpiri te 12x ki ngā taha e rua.
27x-700=2000
Pahekotia te 15x me 12x, ka 27x.
27x=2000+700
Me tāpiri te 700 ki ngā taha e rua.
27x=2700
Tāpirihia te 2000 ki te 700, ka 2700.
x=\frac{2700}{27}
Whakawehea ngā taha e rua ki te 27.
x=100
Whakawehea te 2700 ki te 27, kia riro ko 100.