Notebooks=x
pens=y
7=2x+y
8=x+5y ==> x=8-5y
substitute into the first equation
7=2(8-5y)+y
7=16-10y+y
7=16-9y
-9=-9y
y=1
now substitute y to find x
x=8-5y
x=8-5(1)
x=8-5
x=3
assuming you want amount of money for each item, a notebook is $3, and a pen is $1.
Answer:42
Step-by-step explanation:
2(3+6)+(8)(3)
=(2)(9)+(8)(3)
=18+(8)(3)
=18+24
=42
leave a like if this helped please
Answer:
a, d
Step-by-step explanation:
a. 87(4)-179+957/87=180
d.51(4)-24=180
Answer:привет, я хотел бы помочь вам в школе, вы бы начали объяснять фуртур, и я помогу вам
Step-by-step explanation:
Answer:
190,000
190,000
190,000
Step-by-step explanation:
190,000
190,000