Isolating a variable in two equations is easiest when one of them has a coefficient of 1. Let's say we have the two equations 3A−B=53A−B=5 2A+3B=−42A+3B=−4 and want to isolate one of the variables, such that it appears by itself on one side of the equation. Which of the following is an equation with one of the above variables isolated? View Available Hint(s)for Part A B=3A−5B=3A−53B=−2A−43B=−2A−4B=5−3AB=5−3A2A=−3B−42A=−3B−4