If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-21x=28
We move all terms to the left:
-21x-(28)=0
We move all terms containing x to the left, all other terms to the right
-21x=28
x=28/-21
x=-1+1/3
| y+(6–4)=8–(4–1 | | (3x)^2=9(9+16) | | 2(x-4)²=98 | | (8x+7)+(5x+18)+(11x-4)+(10x+13)=360 | | -56(x-8)=8 | | 2x3/4=x5/8 | | 9(2x-1)+2(3x+4)=20x | | (E+5)x4=10 | | -18(x-10)=6 | | 3n+13=39 | | -(2p-2)=32 | | 1.6n+2=0.5(n+5) | | -16.2=x/7+1.3 | | 22-5/6x=-12 | | x/1.8=28.8 | | 2x-1-1/2(8x-6)=30 | | 8t+22−5t=37 | | a-5=10.5 | | 5+2x=3x+17 | | -3t+1=t=11 | | 5x+3=-3x+51 | | 3−6x=10x+8 | | 90=5w-10 | | 13x-8=-6x+30 | | 7.7x-5.7=63.6 | | 7x+3=3x–9 | | -3+5(x+)=47 | | (x*x)/((0.1-x)(0.3-x)(0.3-x)(0.3-x))=0 | | 3(4+2x)+x=2(x-1)-1 | | -9=39-11p-13p | | -4/7x-26=-15 | | 1/3∙b=4/5 |