If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8+5-a=-2
We move all terms to the left:
8+5-a-(-2)=0
We add all the numbers together, and all the variables
-1a+15=0
We move all terms containing a to the left, all other terms to the right
-a=-15
a=-15/-1
a=+15
| -36=692-8n) | | -32=-4,3s | | 9+n/4=-14 | | 3(y-5)+2(y-11)=24 | | 12x2-10=25 | | 3(y-5)+2(y-11=24 | | 6x=3.2 | | 8+5n=7 | | -19(16)=28-k | | -4x-3(-4x+17)=45 | | b/9=-109 | | (X+2)+x+(x*2)=27 | | 18324-x=2x+1.5x | | -7p-14=2p+9 | | 2,822=34(p+25) | | 6t-5=17 | | n=54+-2n | | (B+2)+b+(b×2)=27 | | Y×7=7y | | -2(x-2)-4x=3(x-+1)-9x | | 60=t+20t | | 13=r3+4 | | 50=8+s/2 | | 11x-37=9x+25 | | 60=t+25t | | 3125+x=4200 | | 200=7x+88 | | 20=p+20p | | 2=3x+700 | | 30=p+30p | | 1=4x+400 | | 2,560=s+8s |