If it's not what You are looking for type in the equation solver your own equation and let us solve it.
77=-7a
We move all terms to the left:
77-(-7a)=0
We get rid of parentheses
7a+77=0
We move all terms containing a to the left, all other terms to the right
7a=-77
a=-77/7
a=-11
| 1-3/4*(x+2)=-5 | | 1.18=0.59(h+1) | | 25+-m=3m+1 | | X-3/4x=1/3 | | 25+-m+1=3m+1 | | x=(17-4) | | s+2.6=4.2 | | 4(x/5-2/1)=20 | | 7(2x+6)-13x=2x+15 | | -18=9g+8 | | 11+3j=-25 | | h-3/3=2 | | -8=n/6 | | -63=9(c-98) | | -10=b+2 | | c+60=81 | | 9/10=q+3/5 | | 5(2x+3)=2(4x-5) | | 16/w-6=70 | | 5(n-85)=75 | | 52=2x+4x-4 | | k-3=-13 | | 3(m+100)=33 | | 3/4r=11 | | 2x-3(2x-3)+4=33-2x-10x | | 2(d+2)=20 | | 1/2x+(5x8)=200 | | 4y-6=28 | | (5x+1)^2=25 | | 3x+3x+3x=9x³ | | 6n+n-6n=5 | | 6.7-2t=-2.7 |