We can multiply 12/18 by 1, but in a different form. We multiply both the numerator and denominator by 10 trillion, we get an equivalent ration. So 120,000,000,000,000/180,000,000,000,000
Well x=1 always unless it tells you other wise so 1+0.5 would equal 1.5 and so after that you keep adding so 1.5 + 0.5 equal 2 so you keep taking the previous answer and adding 0.5 to it
