Question

3[5z–7]–2[9z–11]=4[8z–13]–17​

Answer 1

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3 [5z - 7] - 2 [9z - 11] = 4 [8z - 13] - 17

15z - 21 - 18z + 22 = 32z - 52 - 17

- 3z + 1 = 32z - 69

- 3z - 32z = - 69 - 1

- 35z = - 70

z =$\dfrac{-70}{-35}$

z =$\dfrac{70}{35}$

z = 2

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