Question

(1/15+1/35+1/63)*x=1

Answer 1

(1/15+1/35+1/63)*x=1

1/9*x=1

x      =1:1/9

x      =9

Answer 2

\(\left(\frac{1}{15}+\frac{1}{35}+\frac{1}{63}\right)\times x=1\)

\(\frac{1}{9}\times x=1\)

\(x=1\div\frac{1}{9}\)

\(x=9\)