The simple money multiplier is calculated as
Money Mutilplier = 1 / required reserve ratio
Money Multiplier = 1 / 0.07
Money Multiplier = 14.29
Increasing the reserve ratio will decrease the Money Mutilplier.
Money Mutilplier and reserve ratio has inverse relationship between them i.e increasing the reserve ratio will decrease the money Mutilplier and vice versa. Because the reserve ratio is in the denominator of the fraction, an increase in the reserve ratio decreases the multiplier.