45%x=45 x+50%=3 80%-56%=48 x÷0.6=60%
45%x=45 x+50%=3 80%-56%=48 x÷0.6=60%
X+X×X=56 (X+2)-(X×X+7)=-45 X+a=105 X=?a=?
(x-5)+(x-3)+x+(x+3)+(x+5)=45,x等于?
(X+X)+(X-X)+(X*X)+(X/X)=100
x(x-14)二0*x平方十|2x十27=0,x平方=x+56,x(5x+4)=5x+4,4x平方-45=3|x,-3x
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
x+25%x=2500 x-12%=4.4 45%x+15%=36 120%x-x=56 48%x-12%x=72 【解
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
解方程= =|| 60X=45(X不是乘!)1.6+0.4X=4 X-0.6X=24 80%X-30=24
x+60%x=80
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
3x-60=x