x+10+x-1+x/2+2x=180
4个回答
4.5X=171
X=171/4.5
相关问题
{(2X-2)*180/2X}-{(X-2)*180/X}=15
120/x=180/1.2x x=?
15(x+2.4)+2.1x=180
1/(x^2+2x+10)+1/(x^2+11x+10)+1/(x^2-13x+10)=0
如果|x-3|=0,则x+2= ,|x-2|= .因为∠1+∠2=180°,∠3+∠4=180°,∠2=∠4,所以∠1=
(x+10)°+{180°-(x+70°)}+x°=180°解题过程
1.设X1,X2...X10∈N+,且满足X1+X2+...X10=50,求X1^2+X2^2+X3^2+...+X10
x+(x+10)+[180-(x+70)]=180 x等于多少
(1):180(1-x)方=216 (2):180(1+x)方=216
(sin(180°+2x))/(1+cos2x)*(cos2x0/(cos(90°+x))=