6x+4y=2 10x-8y=32 what is the exact solution by using elimination

First, let's multiply the first equation by two. This is because we have to eliminate either x or y by subtraction or addition so that means either both of the x's or both of the y's in the two equations have to be equal. Thus multiplying the first equation by 2 will give 12x+8y=4.

Next, subtract equation two from equation one:

We get a third equation, 2x-0 = - 28

Thus, x=-28/2. x = - 14

In the same way, to find y, we need to eliminate the x's in both equations. This can be done by multiplying the first equation by 5 and the second by 3

Thus : 30x+20y=10 and 30x-24y=96

Subtracting the second equation from the first, we have 0+44y=-86

y=-86/44

y = 1.96 or 43/22