Compute the value of 'a' by adding the following pair of equations:
2a + b = 15
3a - b = 10
Find the value of: 3a−2b when a=8,b=10
To express the speed of the supersonic jet, which is 130000 m/s, in the standard form, we write it as 1.3×10a m/s. The value of a is _______ .