Question

Tìm x biết:

(1/5 + 1/35 + 1/63) * x =1

Answer 1

\(\left(\frac{1}{5}+\frac{1}{35}+\frac{1}{63}\right)\cdot x=1\)

\(\frac{11}{45}\cdot x=1\)

\(x=\frac{45}{11}\)

Answer 2

(1/5+1/35+1/63)*x=1

(441/2205+63/2205+35/2205)*x=1

11/45*x=1

x=1:11/45

x=45/11