If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12-7p=-9
We move all terms to the left:
12-7p-(-9)=0
We add all the numbers together, and all the variables
-7p+21=0
We move all terms containing p to the left, all other terms to the right
-7p=-21
p=-21/-7
p=+3
| x5=68 | | 12y-17=4y+15 | | 4f+7=15 | | (t-12)/2=13 | | 3n+2n+1=5n+1 | | 10≤2x=x+9 | | 4b-20=15-b | | 7s-9=4s+6 | | 10y-3=78 | | 10-7a=-60 | | 6g-7=4g+5 | | 8r-1=4r-5 | | 5u-8=2u+4 | | -9×10+27=3x-33 | | 6z-7=4z=1 | | 12-5m=7 | | 4w-11=2w+7 | | X^2+y2=50 | | 10k-18=2k+14 | | 3x-14=x+18 | | V=×8x | | 11u-24=4u+18 | | 6y+14=y-21 | | 5s-15=s+17 | | 3x+9=54−2x | | 2t-26=28-4t | | 7-7c=-21 | | 7-7c=-22 | | 8p+7=95 | | d5.5=4 | | 3-4e=-1 | | 3x12=7x4 |