How to find the ones digit of the cube

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Step-by-step explanation:

∴ Then ten's digit of the cube root is 1. ∴ The tens digit of the cube root can be 2. Unit's digit: 768 will guess the unit's digit in the cube root.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: