98+(-54)-(-36.5)+(-44)

Left to right is fine since it's all addition and subtraction...

98 - 54 - (-36.5) + (-44)

44 - (-36.5) + (-44)

44 + (+36.5) + (-44)

When you get to this point, the +44 at the front will cancel out the -44 at the end, leaving you with 36.5.