A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
x + 2y = -22
-x - y = 16

Add to eliminate y.
O Add to eliminate x.
Subtract to eliminate x.
Subtract to eliminate y.

i may be incorrect but i believe that her first error was in step one when she multiplyed her equation by 1/4 when she should have divided it by 1/4

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).