Question

If a⊕ b= 1/a + 1/b , for what decimal value of a is a⊕ 0.2=10?

Answer 1

Answer:1/5 or 0.2

Explanation:

1/a+1/0.2=10

1/a+1/2/10=10

1/a=10/2=10

1/a+5=10

1/a=10-5

1/a=5

a=1/5 or 0.2

Answer 2

0.2

Explanation:

1/0.2 = 5

10-5 = 5

1/a = 5

a = 1/5

a = 0.2