Question

answer this question​

Answer 1

Answer:

let the thinked number be X

Step-by-step explanation:

(x + 2.2)3-3.4 = 20

(x+2.2)3= 20+3.4

(x+2.2)3=23.4

3x+6.6 = 23.4

3x= 23.4-6.6

3x=16.8

x=16.6÷ 3

x= 5.6