The answer is A( +7) x (-5)
The purpose of a cash budget is to help financial managers to get a better understanding of the timing of cash flows.
The cash budget will make it easier for the managers to monitor whether the current cash flow is enough to fund all companies' operation and to determine whether they need to make any changes in their departments.
These would be 2 of the 4 equations, because 6 times 9 equals 54 and 9 times 6 equals 54, but are written in a different way. Thus meaning they are 2 of the 4 equations.
These 2 would be the final to, because 54 divided by 6 is 9, and 54 divided by 9 is 6. Thus meaning they are the final 2 equations.
I hope this helps!