Answer:
You can buy 6
Step-by-step explanation:
You divide 84 by 13 and it will give u a decimal
x= -3/5
4x-2y=14
y=12x-1
4x-2(12x-1)=14
4x-24x+2=14
4x-24x=12
-20x=12
×= -12/20
8x^2=2+3
8x^2=5
x^2=5/8
x= sqrt(5/8)