6.8+12÷x=10.8,14-0.5(x+3)=7.8,3.5x-3x-10=8,7.9-5x=7.8÷2

6.8+12÷x=10.8,14-0.5(x+3)=7.8,3.5x-3x-10=8,7.9-5x=7.8÷2

10x-20=6x,10+6x=8x,2(x+54)=8x,25-2x=5+2x

问答/280℃/2024-05-18 18:23:39

优质解答:

6.8+12÷x=10.8,12÷x=4,x=12÷4,x=3;

14-0.5(x+3)=7.8,0.5(x+3)=6.2,x+3=12.4,x=9.4

3.5x-3x-10=8,0.5x=18,x=36

7.9-5x=7.8÷2; 5x=4,x=0.8

10x-20=6x,4x=20,x=5;

10+6x=8x,2x=10,x=5;

2(x+54)=8x,2x+108=8x,6x=108,x=18;

25-2x=5+2x,4x=20,x=5

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