Hello This question requires us to change the subject of a formula. This can be achieved by following the order of operations in reverse. First, isolate the terms with our variable of interest, x: ax - bx = z - y Then, we take x out as it is being multiplied to both a and b: x(a - b) = z - y Dividing (a - b) on both sides, we get: x = (z - y) / (a - b) Thus, the answer is A
