Use elimination to solve the system of equations. 2x+5y=112𝑥+5𝑦=11 4x+3y=1
Question
Use elimination to solve the system of equations. 2x+5y=112𝑥+5𝑦=11 4x+3y=1
Solution
Step 1: Write down the system of equations
The system of equations is:
2x + 5y = 11 4x + 3y = 1
Step 2: Multiply the equations by necessary multiples such that the coefficients of x or y in both equations will cancel out each other
We can multiply the first equation by 2 to make the coefficient of x in the first equation the same as the coefficient of x in the second equation:
4x + 10y = 22 4x + 3y = 1
Step 3: Subtract the second equation from the first
Subtracting the second equation from the first gives:
7y = 21
Step 4: Solve for y
Dividing both sides of the equation by 7 gives:
y = 3
Step 5: Substitute y = 3 into the first equation
Substituting y = 3 into the first equation gives:
2x + 5*3 = 11 2x + 15 = 11 2x = 11 - 15 2x = -4
Step 6: Solve for x
Dividing both sides of the equation by 2 gives:
x = -2
So, the solution to the system of equations is x = -2, y = 3.
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