If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21x-13=-6
We move all terms to the left:
21x-13-(-6)=0
We add all the numbers together, and all the variables
21x-7=0
We move all terms containing x to the left, all other terms to the right
21x=7
x=7/21
x=1/3
| r*r=A*(4*3.14) | | 3b-4=-b | | 8-w=16 | | -114+3x=-10x+198 | | x+x+3=49 | | Y=50x+350 | | -8y+2(y-8)=-22 | | -5(x+4)=-2x-2 | | 2q+9=2q+2+7 | | 3x+6x-10=0 | | 5/4=x20 | | 4^(3x+2)=22 | | j+5/2=3 | | 4x-45=-17 | | -4d=5-4d | | x=+7≥2 | | 5x+10-3x-6=32 | | 2x-2+x=-12 | | 4z2-4z+1=0 | | –4f=–10−3f | | 5g–7=–3g+1 | | 4x+8=4x=8 | | 10+10h=10h | | -10x+20=20 | | -3n-3n=12 | | 12.50x+7.25=5.25+32.50x | | 6p*(-6)=144 | | -7(v+2)=-5v+2 | | 3x-15=5x-6 | | –10u+7=10u+7 | | g3-10=5 | | 9n-1=10n |