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Solve each system by any method you choose. Which is the x-value of the solution?

7x + 4y + 7 = 2x + 6y + 5 + 4x

-2x + 7y -1 = 13y + 2 - 5x - 10

Sagot :

Okay, I have it, but it's gonna take a while to explain xD
Basically, they're simultaneous equations. I'll do it quickly so I don't have to type as much.
The first equation can be simplified to 3x+2y=2
The second would be 3x-6y=-7
So, you take them away from each other.

3x+2y=2 -
3x-6y=-7
= 8y=9
So y=1.125

Now you have the hard bit out of the way, you can work out x by putting y into one of the equations :)

3x+ (2X1.125) = 2
3x+2.25 = 2
3x = -0.25
So x = 0.08333... (Can't do a recurring sign on my phone xD)
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