If it's not what You are looking for type in the equation solver your own equation and let us solve it.
300a=15
We move all terms to the left:
300a-(15)=0
We move all terms containing a to the left, all other terms to the right
300a=15
a=15/300
a=1/20
| 3y5y+13=−43−3y | | -13+12x-4=6(x-1) | | 4(x+7)=63 | | 2x-8/8=34/3 | | 14+13b=-3+b+13b | | 56=8(c-89) | | 5/2x-1=21/2 | | 10-9k=-10k-8 | | 6x–2=22 | | 2x+1=3x–3=9x | | 5+7/6x=3/2 | | 10−9k=–10k−8 | | 4(f-67)=36 | | 6x+10-12=-14 | | 7.8b-2.14=-41.7 | | .8(x+7)=24 | | A+2a+75=180 | | 2.4=4b | | 5y=-12+4y | | 5p=9+15=4p | | -2c+36=-24 | | 5x+3x+49=24 | | 11+6x=7-7x | | (5x+2)6x+134=180 | | v−247=7 | | 62=8+9d | | x+15.42=23.42 | | 7(y−5)= 21 | | 2x^2+11x=-x^2+5x+88 | | 3x+5(2x+1)=18 | | 4.2(x+5)-3=43.2 | | 7(y−5)= 2121 |