Question

(1/2+1/6+1/18+1/54+1/162)x x=1/2+1/6+1/12+1/30

Answer 1

(1/2 + 1/6 + 1/18 + 1/54 + 1/162) × x = 1/2 + 1/6 + 1/12 + 1/30

121/162 × x = 47/60

x = 47/69 : 121/ 162

x = 2538/2783