If A + B = 2X - 2 and A - B equals 4X - 8, find A and B

A=3X-3

B=-X+3

If A+B=2X-2, then using equalivant exchange A=2X-2-B and

B=2X-2-A

If A-B=4X-8, then A=4X-8+B and - B=4X-8-A (or B=-4X+8+A)

Since A equals both 2x-2-B and 4X-8+B we can add both equations to equal 2A=6X-6 now we devide that by 2 to get

A=3X-3

Do the exact same for B, so b equals both 2X-2-A and - 4X+8+A

We can add them both to get 2B=-2X+6 and decide that by 2 to get B=-X+3