Find the L.C.M of 1 and 4 and use it to divide the entire expression to simplify The L.C.M of 1 and 4 is 4 , hence divide the entire expression by 4 NOTE: - x - = +, hence -1 x -3 = + 3 In -1(2y-3), the -1 multiplies everything in the bracket Principle: a(b+c)=a×b+a×c a(b−c)=a×b−a×c In 12y−2y=10y because they are like terms and can be simplified further