Whatever year you were born in
2013-70=1943
You were born in 1947 if you have had your birthday in 2017, or else 1946.
Oh, dude, if you're 70 years old, you were born in 1952. Like, simple math, right? Just take the current year and subtract your age. It's not rocket science, unless you're trying to calculate the trajectory of a pie into your mouth.
If you were born in 1942, then you turn 70 on your birthday in 2012.
If you have turned or are turning 70 years old in 2013, then you were born in 1943.
1946
Calculated in 2010 the year of birth was 1940.
You will turn 70 in 2013.
Stop being lazy and subtract 70 from 2012
Around 70 million years ago.
70 into a fraction = 70/1