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
