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Tohaina

4+7\times 2+15\times 7-11\times 11
Me whakakore te 4 me te 4.
4+14+15\times 7-11\times 11
Whakareatia te 7 ki te 2, ka 14.
18+15\times 7-11\times 11
Tāpirihia te 4 ki te 14, ka 18.
18+105-11\times 11
Whakareatia te 15 ki te 7, ka 105.
123-11\times 11
Tāpirihia te 18 ki te 105, ka 123.
123-121
Whakareatia te 11 ki te 11, ka 121.
2
Tangohia te 121 i te 123, ka 2.