If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2+n+n=21
We simplify the equation to the form, which is simple to understand
2+n+n=21
We move all terms containing n to the left and all other terms to the right.
+1n+1n=+21-2
We simplify left and right side of the equation.
+2n=+19
We divide both sides of the equation by 2 to get n.
n=9.5
| -18=-6u | | (-2+5i)(-1+4i)= | | x=8x+12 | | 0.48x=0.8 | | 2a+8=8(1+3a) | | 725=x+(x+50) | | 7r+15=-5(6r-3) | | -13x=143 | | (-0.9014+2)=3 | | 2=t-35/5 | | (6a-4)=(3a+53) | | -x+5=-(x+5) | | -3(3x+8y)+4(5x-2y)= | | 40=5g | | 15=(.5x+6) | | 3*sqrt(2+x)-6*sqrt(2-x)+4*sqrt(4-x^2)=10-3*x | | 6(4x+4)+12= | | 6(n+3)=18+6n | | 4=16/h | | -i(4-8i)= | | -98x-4=10x-20 | | 3+n+11-n+n=64 | | 3+n+11-n+n=21 | | 39=3(v-29) | | 12(x-5)=12(x+5) | | 15x^2+46x+35= | | 1/2(x-3)²-8=9/2 | | 26=49-p | | v^2=-49-14v | | 3(4x-5)=6(2x+2) | | w/5-1=1 | | 8x+6(6+x)=-12+8x |