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Use elimination to solve each system of equations. I have to show all work and write the answer as an (x,y) ordered.
5x-2y=-10
3x+6y=66
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5x - 2y = -10, (1)
3x + 6y = 66. (2)
Multiply equation (1) by 3 (both sides). You will get
15x - 6y = -30, (1')
3x + 6y = 66. (2')
Add the equations (1') and (2'). By doing this way, you eliminate "y" and get a single equation for "x":
18x = 66 - 30,
18x = 36,
x = = 2.
From this point please complete the solution on your own.
On Elimination method see the lesson
- Solution of a linear system of two equations in two unknowns by the Elimination method
in this site.