Question

Question 2 (10 points)Yuriy and his brother Anduray are each mailing a birthday gift to a friend. Yuriy's package weighs one lesspound than three times the weight of Anduray's package. The combined weight of both packages is 7pounds. Y represents Yuriy's package, and A represents Anduray's package.Their equations are as follows:Y = 3A - 1Y+A= 7Part 2: Solve the system using substitution or elimination to determine the weight of each package

Answer 1

SO,
we have two equations here in the first part,
Y
= 3A -1
y+A=7
Let us use the elimination method here,
Subtracting equation second from first we get,
y= y
- A
= 3A
0
A = 3A
8
4A = 8
A
8
A
2
putting it in second equation we get,
y
+A=7
y
+ 2
Hence, we get the required value of weights.

Answer 2

So,

we have two equations here in the first part,

`\begin{gathered} Y=3A-1 \\ Y+A=7 \end{gathered}`

Let us use the elimination method here,

Subtracting equation second from first we get,

`\begin{gathered} Y-Y-A=3A-1-7 \\ 0-A=3A-8 \\ 4A=8 \\ A=(8)/(4) \\ A=2 \\ \text{putting it in second equation we get,} \\ Y+A=7 \\ Y+2=7 \\ Y=7-2 \\ Y=5 \end{gathered}`

Hence, we get the required value of weights.