The problem asks us to solve the following system of linear equations: $3x - y = 17$ $x + 4y = 10$

AlgebraLinear EquationsSystem of EquationsElimination Method
2025/3/12

1. Problem Description

The problem asks us to solve the following system of linear equations:
3xy=173x - y = 17
x+4y=10x + 4y = 10

2. Solution Steps

We can solve this system of equations using substitution or elimination. Let's use elimination.
Multiply the second equation by -3 to eliminate the xx variable.
3(x+4y)=3(10)-3(x + 4y) = -3(10)
3x12y=30-3x - 12y = -30
Now we have the system:
3xy=173x - y = 17
3x12y=30-3x - 12y = -30
Add the two equations:
(3xy)+(3x12y)=17+(30)(3x - y) + (-3x - 12y) = 17 + (-30)
3xy3x12y=133x - y - 3x - 12y = -13
13y=13-13y = -13
Divide both sides by -13:
y=1313y = \frac{-13}{-13}
y=1y = 1
Now that we have the value of yy, we can substitute it back into either of the original equations to solve for xx. Let's use the second equation:
x+4y=10x + 4y = 10
x+4(1)=10x + 4(1) = 10
x+4=10x + 4 = 10
x=104x = 10 - 4
x=6x = 6
Therefore, the solution is x=6x = 6 and y=1y = 1.

3. Final Answer

x=6,y=1x = 6, y = 1
(6, 1)

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