0.3x+0.4=0.7x-1

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0.3x+0.4=0.7x-10.3x+0.4=0.7x-10.3x+0.4=0.7x-1 

0.3x+0.4=0.7x-1
0.3x+0.4=0.7x-1

0.3x+0.4=0.7x-1