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Sagot :
To solve the given system of simultaneous equations:
[tex]\[ \begin{cases} x + y = 5 \\ x - y = 1 \end{cases} \][/tex]
we can use either the substitution method or the elimination method. Here, I will use the elimination method:
1. Write down the equations:
[tex]\[ 1) \quad x + y = 5 \][/tex]
[tex]\[ 2) \quad x - y = 1 \][/tex]
2. Add the two equations together to eliminate [tex]\( y \)[/tex]:
[tex]\[ (x + y) + (x - y) = 5 + 1 \][/tex]
Simplifying this, we get:
[tex]\[ 2x = 6 \][/tex]
3. Solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{6}{2} = 3 \][/tex]
4. Substitute [tex]\( x = 3 \)[/tex] back into one of the original equations to solve for [tex]\( y \)[/tex]. We can use the first equation [tex]\( x + y = 5 \)[/tex]:
[tex]\[ 3 + y = 5 \][/tex]
5. Solve for [tex]\( y \)[/tex]:
[tex]\[ y = 5 - 3 = 2 \][/tex]
So, the solution to the system of equations is:
[tex]\[ \boxed{(x, y) = (3, 2)} \][/tex]
This gives us the values [tex]\( x = 3 \)[/tex] and [tex]\( y = 2 \)[/tex].
[tex]\[ \begin{cases} x + y = 5 \\ x - y = 1 \end{cases} \][/tex]
we can use either the substitution method or the elimination method. Here, I will use the elimination method:
1. Write down the equations:
[tex]\[ 1) \quad x + y = 5 \][/tex]
[tex]\[ 2) \quad x - y = 1 \][/tex]
2. Add the two equations together to eliminate [tex]\( y \)[/tex]:
[tex]\[ (x + y) + (x - y) = 5 + 1 \][/tex]
Simplifying this, we get:
[tex]\[ 2x = 6 \][/tex]
3. Solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{6}{2} = 3 \][/tex]
4. Substitute [tex]\( x = 3 \)[/tex] back into one of the original equations to solve for [tex]\( y \)[/tex]. We can use the first equation [tex]\( x + y = 5 \)[/tex]:
[tex]\[ 3 + y = 5 \][/tex]
5. Solve for [tex]\( y \)[/tex]:
[tex]\[ y = 5 - 3 = 2 \][/tex]
So, the solution to the system of equations is:
[tex]\[ \boxed{(x, y) = (3, 2)} \][/tex]
This gives us the values [tex]\( x = 3 \)[/tex] and [tex]\( y = 2 \)[/tex].
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