(x-10)*28-x*15=370
X/15 + X/12 + X/10 = 1365,求X,
x+x=x+15
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
130%x+x=4.6 x÷50%=10 x/9-x/15=16%
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
{int x=15; while (x>10&&x
20%x=(10+X)*15%x怎么解
解方程X-0.5X=15 X-0.8X=10 2.5X+2X=9
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
X-10分之7X=15
四道方程:2x+6=5x 6x-28=2x 8(x-3.6)=0.8x 15x-110+7x=110
计算:1/(x^2-7x+10)+1/(x^2-x-2)+1/(x^2+5x+4)+1/(x^2+11x+28)=( )