Find the solution of this system of equations.
separate the x- and y-values with a comma.
x - 12y = - 11
x- y = -11

How do i do this? i don’t understand

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?