What is 0.7 which the seven is reccuring as a fraction in simpliest form

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?