古詩詞大全網 - 成語故事 - 10+3x=12.7

10+3x=12.7

?10+3x=12.7

3x=12.7-10

3x=2.7

1?x=0.9

(5x+4)/3+(x+3)/4=2-(5x-5)/12?3?4?12?12124(5x+4)+3(3+x)=24-(5x-5)?

4(5x+4)+3(3+x)=24-(5x-5)?20x+16+9+3x=24-5x+523x+25=29-5x?

23x+25=29-5x?5x23x+25+5x=29-5x+5x?

23x+25+5x=29-5x+5x?28x+25=29

1?

28x=4x?128x=1/7?