Answer:
Bob has $7 dollars now.
Explanation:
b = Bob's original amount of money ($x$ dollars)
p = Pat's original amount of money
"If Pat gives Bob a dollar, Bob will have twice as many dollars as Pat."
b + 1 = 2(p-1)
b + 1 = 2p - 2
b = 2p - 2 - 1
b = 2p - 3
"If Bob g Pat a dollar instead, they both will have the same number of dollars."
p + 1 = b - 1
p = b - 1 - 1
p = b - 2
In the first equation replace p with (x-2)
b = 2(b-2) - 3
b = 2b - 4 - 3
b = 2b - 7
7 = 2b - b
7 = b
