id0617045
08.11.2019 •
Mathematics
If a + b = 2x -2 and a -b equals 4x -8, find a and b
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Ответ:
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
Ответ:
historia corta basada en las notas y escenas que creaste en la Lección puestas lasson res1
Step-by-step explanation: