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25十60%x二40怎么篢

0.6x=40-25 0.6x=15 x=15÷0.6 x=25

60×(50+25) =60×50+60×25 =3000+1500 =4500

5x+25×2=60 5x+50=60 5x=60-50 5x=10 x=2

60%x+25=40 解:60%x=40-25 60%x=15 x=15÷60% x=25 x-10%x=18 解:(1-10%)x=18 90%x=18 x=20 x+30%x=52 解:(1+30%)x=52 130%x=52 x=40 (1-25%)x=36 解:75%x=36 x=36÷75% x=48 19-120%x=7 解:120%x=19-7 120%x=12 x=10 2x+30%x=9.2 解:(2+30...

10(29/60-x)=18(25/60-x) 29/6-10x=15/2-18x 8x=8/3 x=1/3

10(29/60-x)=18(25/60-x) 29/6-10x=75/10-18x 18x-10x=75/10-29/6 8x=8/3 x=1/3

=2.25x3/5+2.25x3/5+3/5 =(2.25+2.25+1)x3/5 =5.5x3/5 =3.3

85%x=10.2

(1)60%x+25=40 60%x+25-25=40-25 60%x÷60%=15÷60% x=25;(2)x-10%x=18 90%x=18 90%x÷90%=18÷90% x=20;(3)x+30%x=52 130%x=52130%x÷130%=52÷130% x=40;(4)(1-25%)x=26 75%x=26 75%x÷75%=26÷75% x=3423.

(1)60%x+25=40 60%x+25-25=40-25 60%x÷60%=15÷60% x=25;(2)x-10%x=18 90%x=18 90%x÷90%=18÷90% x=20;(3)x+30%x=52 130%x=52130%x÷130%=52÷130% x=40;(4)(1-25%)x=26 75%x=26 75%x÷75%=26÷75% x=34 2 3 .

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