If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-I+7=3
We move all terms to the left:
-I+7-(3)=0
We add all the numbers together, and all the variables
-1I+4=0
We move all terms containing I to the left, all other terms to the right
-I=-4
I=-4/-1
I=+4
| 11x+17=-82 | | 9x-(4x-12)=40 | | 8x-(5x-14)=34 | | 80x+4x-40=180 | | -10*j=10-5j+4 | | -j*0.8=-0.9j*0.76 | | -6*8u=4+9u | | 262.5*x=1080 | | 261*x=1080 | | 470*x=1920 | | s50+34+s44=180 | | 50+3a+2a=180 | | 58+3p+89=180 | | 0.9h=h-0.6 | | 2z+3z+7z=180 | | 84+12v+36=180 | | 6u+37+101=180 | | 16w+11w+9w=180 | | 2c+40+2c=180 | | 59+61+12s=180 | | 3s+12s+30=180 | | 11w+62+52=180 | | 61+4b+67=180 | | 79+49+3x=180 | | 108+47+2x+11=180 | | 56+2x+12+9x+20=180 | | 1/4(16z+4)=14 | | 3.2x+33=57 | | 3x-9+80+41=180 | | 2x+16+90+30=180 | | y+x=126 | | -w+10=220 |