If it's not what You are looking for type in the equation solver your own equation and let us solve it.
65-5z=40
We move all terms to the left:
65-5z-(40)=0
We add all the numbers together, and all the variables
-5z+25=0
We move all terms containing z to the left, all other terms to the right
-5z=-25
z=-25/-5
z=+5
| 49881.5=x/(1.03)^6+x/(1.03)^12 | | 49881.5=x/(1.03)^9+x/(1.03)^12 | | 18+1/4b=41 | | 7w-12=37 | | 52x^2+26x=0 | | -2m=-2m+10 | | 42h^2+37h=0 | | 10m=-4m-2 | | -3.4=3.2+2.2y | | 5x-4=20-8 | | -8.6x-1.3=2.7x-1.3 | | 4x-5.8=7.2 | | 5-y=-4y+-29 | | -6.74=-1.8y+0.2 | | 3.5c+0.9=7.6c-6.7 | | 3x+2x^2=65 | | 1/2xx4=3x+45 | | 1.1n+2.4=-8.3-7.7 | | 2x+10°+2x-25°=180° | | -(5.6n+0.4)/2.5=4.8 | | 0.1(15+m)=31.5 | | 5x+9+7x-15=90 | | 0.09(8+x)=1.8 | | 15c=-60 | | 2=4x2 | | 3p+3=4p-6 | | 1/8x+5/2=1 | | 0.75(d+300)=806.25 | | n-252=-455 | | 253+c=275 | | 4.9=-12-w/6 | | 6k-18=2k+6 |