Find the value of x for the following system of equations. x + y = 5 x  y = 7 1 1 2
Mathematics
ballballer789
Question
Find the value of x for the following system of equations. x + y = 5 x  y = 7 1 1 2
2 Answer

1. User Answers Yang100
Answer:
x=1, y=6. (1, 6).
Stepbystep explanation:
x+y=5
xy=7

2x=2
x=2/2
x=1
1+y=5
y=5(1)=5+1=6

2. User Answers lauren6751
Answer: (5,20)
Let’s start by rewriting the equations
x+y=5x
y=7112
Since the value of y cannot be negative, let’s turn this positive by multiplying each number by 1.
1 (y=7112)
y=7+11+2
Now let’s determine what method we would like to use to solve
When solving a system of equations, you can use one of three methods:
1) Graphing
2) Substitution
3) Elimination
Seeing that we already know how to find y, let’s solve this using the substitution method.
We’re going to start by substituting y into the second equation and solving
x+ 7+11+2=5x
*add 7,11, and 2)
x+20=5x
*subtract x on both sides*
20=4x
*divide both numbers by 4*
5=x
Now that we have x, we have the first number of the ordered pair. It is currently: (5,20)
We found y by adding all the numbers, and found x by solving the equation
Hope this helps comment below for more questions :)