5(16-x)=35

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5(16-x)=35
5(16-x)=35

5(16-x)=35
(16-X)=35除以5=7
即16-X=7
16=7+X
X=16-7=9

2x+0.4x=48(并检验)8x-x=14.7 35x+13x=9.6 5(x+3)=35x+3.7x+2=16.114x+3x-12x=15818-2.5x=13(写成检验过程)9.5x-5x=271.5x-6=3(写成检验过程)7x-0.6x=16 x+x÷5+(x+35)=112 (5-X)X(7-X)=35 和(5+X)X(7+X)=35 26.2-9X=8.24(X+2)=11.64X+0.5乘3=6.75X-3.3=7.31.7X-0.7X=20X-4.5+5.5=158X+5乘7=914.8X+3.4乘6.7=34.785.4X+0.6X=6.63.5(X乘7)=25.913.056除X+3.20.35乘X=8.898(X-3)-5X=275X+20==10024-16X=2.77.5乘6-5X=0.825X-16X=2.73.5乘C(X+50)=238X-12.6=8.4 5x+(15-x)=35 解方程(按顺序解答,3.8+X=12.8 6.4+X=15.6 X-4.8=4.8 1.5-X=0.84 2X+0.82=0.82 3+0.5=7 2X+0.4X=48(并检验)8x—x=14.735x+13x=9.65(x+3)=35x+3.7x+2=16.114x+3x—1.2x=15818—2.5x=13(并检验)1.5x—6=3(并检验)9.5x—5x=277x—0.6x=16 (1)X-3/X-1+X²-2/(x-1)(X-7)=1+x-5/x-7 (2)2x-1/x+4-5=96/x²-16-1-3x/4-x (1)解方程x(16x-5)-(4x+1)(4x-1)=112.解不等式2x(x-1)-x(2x-5) 解方程:2x-36=204 (1-25%)x=36 5x+4分之1*16=34 50%x-35%x=3 matlab解数值分析题p=(x-1)*(x-2)*(x-3)*(x-4)*(x-5)*(x-6)*(x-7)*(x-8)*(x-9)*(x-10)*(x-11)*(x-12)*(x-13)*(x-14)*(x-15)*(x-16)*(x-17)*(x-18)*(x-19)*(x-20)解为1,2,3……,20取多个非常小的数用软件工具求解方程p(x)+n*x^19=0,并 解方程:(x+2)·(4x-5)=4x·x+35 方程:[X-5-5*(X-5)/X]/X=16/25 [x-5-5(x-5)/x]/x=16/25 x的平方+( )x+16=(x+ )(x+8) (16x^4+4x^2+x)/x=? 2次3项问题X^2+5X-6我会10字想乘 先说这个X^2+5X-6 X -6 X X 1这里 -6*1=-6 -6X+1X=5X 这样也能算出等于5X为什么(X-6)(X+1) 是错的?而 X 6X X -16*-1=-6 6X-1X=5X ( X+6) (X-1)为什么是对的?这里我不懂 5+96/x²-16=2x-1/4+x - 3x-1/4-x(5+96)/(x²-16)=(2x-1)/(4+x) - (3x-1)/(4-x) 5x+15x =( + )x =20x