If Carlos gains 4.5 pound over 6 months, he will then weigh 85 pounds. How much does he weigh today?
We can set up the equation with the variable as x as today's weight showing the addition of 4.5 pounds to 85 pounds.
x + 4.5 = 85
Then, we can subtract 4.5 from both sides of the equation to find the answer.
x+(4.5-4.5)=85-4.5
x=80.5 pounds