Answer:
(-3,7)
Step-by-step explanation:
These set of problems are called system of equations.
In this case, we can subtract the top equation from the bottom one. Our goal is to get rid of one variable.
3x + 4y = 19
3x + 6y = 33
2y = 14
Do the algebra and all that good stuff =-)
y = 7
Now, we need to substitute y=7 in every equation.
3x + 4(7)=19
Do the multiplication
3x + 28 = 19
3x = -9
x = -3
Great! We got the x value, but we need to plug y=9 into the other equation to make sure our answer is correct.
3x + 6(7) =33
So the multiplication
3x + 42 = 33
3x = -9
x = -3
All these system of equation problems need to be written as an ordered pair.
(X,Y)
(-3,7)
