-155
Anything times 1 is whatever you started with.
The number is 1 because (8 times1) + (-7) = 1
53 is a prime, so 1 times 53 (unless you allow fractions).
the solution to the equation -53 plus 1 -26 is -78.
53 x 1
212 plus 1, times 4
54
53
53
52 plus 1.
53 multiplied by 18 is 954.
each number is 3 times the last plus 2