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5.5x%x=8.1解方程怎么做

(1)1.7x+130%x=6 3x=6 3x÷3=6÷3 x=2;(2)13-20%x=8 13-20%x+20%x=8+20%x 8+20%x=13 8+20%x-8=13-8 20%x=5 20%x÷20=5÷20% x=25;(3)37x-514x=70% 114x=70% 114x×14=70%×14 x=9.8.

①220%x=0.2 2.2x=0.2 x=0.2÷2.2 x=1/11 ②x-25%x=5/8 75%x=5/8 x=5/8÷75% x=5/6

(1)20%X=10, 20%X÷20%=10÷20% x=50;(2)95%X-65%X=9, 30%x=9, 30%x÷30%=9÷30%, x=30;(3)50%X-30%X=5.5, 20%x=5.5, 20%x÷20%=5.5÷20%, x=27.5;(4)X+350%X=90, 450%x=90, 450%x÷450%=9÷450%, x=2;(5)12X+4X=128, 16x=128...

(1)x-30%= 3 4 &nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq; x-0.3=0.75&nbsq;&nbsq;&nbsq; x-0.3+0.3=0.75+0.3&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq;&nbsq; x=1.05;(e)3+70%x=5&nbsq;&nbsq;&nbsq;&nbsq;&nbsq; 3...

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解:9%x+4.8-8%x=5 1%x=0.2 x=20 已回答,请采纳,谢谢

1026-0.095x=0.085x 0.085x+0.095x=1026 0.18x=1026 x=5700

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