If it's not what You are looking for type in the equation solver your own equation and let us solve it.
50-a=20
We move all terms to the left:
50-a-(20)=0
We add all the numbers together, and all the variables
-1a+30=0
We move all terms containing a to the left, all other terms to the right
-a=-30
a=-30/-1
a=+30
| 90+3x=360 | | X2+0.28x-0.33=0 | | 9x-2/5=2x−2 | | 3(3x-1)=x-2 | | a-50=20 | | 12−х(1−6x)=3x(2x−1)+2x | | 7+2g=21 | | 16y-4y=30 | | (2x-4)=4x+10 | | 4(x-1)+x=5/3 | | A*a=a^2 | | a+3=6-a | | 2x+21=35x | | 7x+10+3x=30 | | 612=114+n | | 4(x-1)+x=5x3 | | 4+2x=76-6x | | 7x-9=117-7x | | 8w=4880w | | 4(x+8)=8x+8-4x | | 9+3b=6 | | 5x=7x+23 | | -2(5x-3)=14 | | 3x+5=4x+5-x | | 3x+5=+2+3 | | 7x-1=53+x | | X+x+8x+16=888 | | 5+3(x-1)=5x-1-6 | | 42+22x=28 | | (6−x)+(12+x)−(3−2x)=15 | | 3)(6−x)+(12+x)−(3−2x)=15 | | 2+7x=10+6x |