Solve for x:
15).
x + 25 = - 50
16).
x + 1492 = 0
17).
x - 49 = 50
18).
x - 64 = 128
19).
x - 25 = - 50
20).
x - 30 = - 90
21).
x - 133 = 0
22).
x + 133 - 158 = 25 (two steps)
23).
Mr. Schilz has $326.74 in his bank account. Last week he wrote a check for $74.10. How much did he start out with? Write the algebraic equation and solve for x.