If an expression contain brackets, simplify the expression within the brackets first.For example:3 + (5 – 3) = 3 + 2 = 5If an expression contains more than one pair of brackets, that is, there are brackets within brackets, simplify the expression within the innermost pair of brackets first. For example: 3 [15 – (3 + 4)] = 3 + [15 – 7] = 3 + 8 = 11If an expression contains only additions and subtractions, work from left to right. For example: 28 + 12 – 19 = 40 – 19 = 31If an expression contains only multiplications and divisions, work from left...
