x-1/7x+16-(x-1/7x+16)+5=x+9
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x-1/7x+16-(x-1/7x+16)+5=x+9
x-1/7x+16-(x-1/7x+16)+5=x+9
x-1/7x+16-(x-1/7x+16)+5=x+9
同乘35,35x-5x+560-(7x-x+112)+175=35x+315
移项,-5x-6x=315-560+112-175
化简,-11x=-308
解得,x=28
x=-4