作业帮3 x 2.5
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3 x 2.5
3 x 2.5
3 x 2.5
有可能是三根导线,每一根截面积直径是2.5mm .
7.5毫米
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
2.5(x-3x^2)-[6x^2-1.5(3x^2-5x)]
(x+x+2.5)*(3/5)=75-(3/7)x
2(x+1)-(3-x)=2(1.5x-2.5)
3x-2.5x=1.9 x是什么?要今天,
1.8x(3x-2.5)-3.8x=1.54
3(x+2.5)=5x
3x+6×2.5=16-x
3x+2.5x+16=40
3x-2.5x=4.55
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
解方程3x=x+4,2.6x-8=2.4x,4x+12=10x+3 ,7x=12-×,2.5x=2x+4,5x+3=6x+1,详列计算,
6x+3x=13.51.x+0.3x=248x-3x=21.05x+2x=907.7+3x=12.28*2.5-2x=13.67x-2*18=27
12x+3x＝18+27 11x+40＝100-9 9x+30＝90+6x 2.5x-x＝6+1.5 2x+18＝7x+3 36+2x＝7x-14
(1) 2.5+3X=1.1 (2) 12X-5X=2.1 (3) X-0.3X=1.4 X=1.1 X=2.1 X=1.4 X=?X=0.3 X=?
3 x 2.5
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x