The solution to the system of equations 2x+7y=-1 and 4x-3y=-19 is the ordered pair (-4, 1) found using the elimination method.
To solve the system of equations 2x+7y=-1 and 4x-3y=-19, we can use the method of substitution or elimination. Let's use the elimination method:
First, we want to eliminate one of the variables by making the coefficients of either x or y the same with opposite signs. We can achieve this by multiplying the first equation by 2, giving us:
- 4x + 14y = -2
- 4x - 3y = -19
Subtract the second equation from the first:
- (4x + 14y) - (4x - 3y) = -2 - (-19)
- 4x + 14y - 4x + 3y = -2 + 19
- 17y = 17
Divide by 17 to solve for y:
Next, substitute y=1 into the first original equation to solve for x:
- 2x + 7(1) = -1
- 2x + 7 = -1
- 2x = -8
- x = -4
The solution to the system of equations is (-4, 1), expressed as an ordered pair.
Question:
Solve the following system of equations. Express your answer as an ordered pair in the format (a, b) with no space between the numbers or symbols.
2x+7y=-1 and 4x-3y=-19