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a-()=13
We move all terms to the left:
a-()-(13)=0
determiningTheFunctionDomain a-13-()=0
We add all the numbers together, and all the variables
a=0
| x×7=49 | | (4)y=21 | | 5x=35=55 | | 5p=5p-7.5 | | 3(X+6)−(3−4)=8−4(3−x) | | x+(3)=9 | | |5x+8|=-x | | -2x+x2=143 | | -2(x-3)-4=3x | | I4x+1I=3 | | 4(4p–1)=4(2p–3) | | v+6/3=v+2/4 | | 180=x+14+147 | | -3n-15+2=14 | | 90=(x-2)/3 | | 0.75(8+f)=2−1.25f | | W=4z-5 | | 4p^2-3p+6=4 | | -11m+1=89 | | 6m-6=-42 | | 0=55-((0.7)(x)) | | 0=x(36-4x²) | | -100=11x+10=-1 | | 0=55-(0.7•x) | | 20x-8=18x | | 0=x(36-4x^2) | | 12=6x=36 | | 15x2+15x=78 | | 9m+7=-70 | | 9y+4=5((9y+4)/5) | | 15x2+15x-78=0 | | 15x2-15x-78=0 |