Whakaoti i te 86-(15x-7(6x-9)-2(10x-5(2-3x)))

$$86-(15x-7(6x-9)-2(10x-5(2-3x)))$$

Aromātai

$$77x+3$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -7 ki te 6x-9.

$$86-\left(15x-42x+63-2\left(10x-5\left(2-3x\right)\right)\right)$$

Pahekotia te 15x me -42x, ka -27x.

$$86-\left(-27x+63-2\left(10x-5\left(2-3x\right)\right)\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te 2-3x.

$$86-\left(-27x+63-2\left(10x-10+15x\right)\right)$$

Pahekotia te 10x me 15x, ka 25x.

$$86-\left(-27x+63-2\left(25x-10\right)\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 25x-10.

$$86-\left(-27x+63-50x+20\right)$$

Pahekotia te -27x me -50x, ka -77x.

$$86-\left(-77x+63+20\right)$$

Tāpirihia te 63 ki te 20, ka 83.

$$86-\left(-77x+83\right)$$

Hei kimi i te tauaro o -77x+83, kimihia te tauaro o ia taurangi.

$$86-\left(-77x\right)-83$$

Ko te tauaro o -77x ko 77x.

$$86+77x-83$$

Tangohia te 83 i te 86, ka 3.

$$3+77x$$

Whakaroha

$$77x+3$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -7 ki te 6x-9.

$$86-\left(15x-42x+63-2\left(10x-5\left(2-3x\right)\right)\right)$$

Pahekotia te 15x me -42x, ka -27x.

$$86-\left(-27x+63-2\left(10x-5\left(2-3x\right)\right)\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te 2-3x.

$$86-\left(-27x+63-2\left(10x-10+15x\right)\right)$$

Pahekotia te 10x me 15x, ka 25x.

$$86-\left(-27x+63-2\left(25x-10\right)\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 25x-10.

$$86-\left(-27x+63-50x+20\right)$$

Pahekotia te -27x me -50x, ka -77x.

$$86-\left(-77x+63+20\right)$$

Tāpirihia te 63 ki te 20, ka 83.

$$86-\left(-77x+83\right)$$

Hei kimi i te tauaro o -77x+83, kimihia te tauaro o ia taurangi.

$$86-\left(-77x\right)-83$$

Ko te tauaro o -77x ko 77x.

$$86+77x-83$$

Tangohia te 83 i te 86, ka 3.

$$3+77x$$