x+25+(325-x)×(1-5% )=325+16怎么算?求了

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x+25+(325-x)×(1-5% )=325+16怎么算?求了

x+25+(325-x)×(1-5% )=325+16怎么算?求了
x+25+(325-x)×(1-5% )=325+16
怎么算?求了

x+25+(325-x)×(1-5% )=325+16怎么算?求了
x+25+0.95(325-x)=341
x+25+0.95×325-0.95x=341
x-0.95x=341-25-308.75
0.05x=7.25
x=7.25÷0.05
x=145

求助得到的回答
(-0.8)+1.2+(-0.7)+(-2.1)
=-0.8+1.2-0.7-2.1
=1.2-0.8-0.7-2.1
=0.4-0.7-2.1
=-(0.7-0.4)-2.1
=-0.3-2.1
=-(0.3+2.1)
=-2.4

解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 1x(25%-X)=5 *-----------------------------------------------*| 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 || 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 60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2 (x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25 计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1 3/x-1=4/x 6/x+1=x+5/x(x+1) x(x平方-1)+2X平方(X+1)-3X(2X-5)帮个忙 数学题啊!解不等式(过程)4x-2≥5x+7x+15>2x-36(x+2)≤3x-15(x+2)≤6x+13x-1≥6x-25(x+2)3x+20x-5/4 +1≤6x-23x+4>x/2 -1 36x-1=0 4x=81 (x+5)=25 x+2x+1=4 36x-1=04x=81(x+5)=25x+2x+1=4 12—120%X=6 5分之3X—5%X=5.5 (1+25%)X=7.5 X—30%X=91 4%X+6%X=29.4 X+25%X=8.75 x^2+2x-8/x^3+25x+x/(x-2/x-x+4/x+1,其中x=-4/5 f(x)=x*x-5x+1/x*x*x,求导x的三次方分之x的平方减去5x加上1 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2 1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x 解下列方程:1、4X平方+12X+9=81 2、2X平方+3X=3 3、X平方-2X+1=25 4、X(2X-5)=4X-105、X平方+5X+7=3X+11 6、1-8X+16X平方=2-8X 怎么解