设某数是x,
则1.2x-1.4=0.5x+3.5
1.2x-0.5x=3.5+1.4
0.7x=4.9
所以x=7
7x-3.8+6.2=10+2x 则7x-2x=10-6.2+3.8 则5x=7.6 解得x=1.52
10x-(2x+6)=8,则10x-2x-6=8,则8x=6+8,解得x=1.75
设某数是x,
则1.2x-1.4=0.5x+3.5
1.2x-0.5x=3.5+1.4
0.7x=4.9
所以x=7
7x-3.8+6.2=10+2x 则7x-2x=10-6.2+3.8 则5x=7.6 解得x=1.52
10x-(2x+6)=8,则10x-2x-6=8,则8x=6+8,解得x=1.75