If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d*20=180
We move all terms to the left:
d*20-(180)=0
Wy multiply elements
20d-180=0
We move all terms containing d to the left, all other terms to the right
20d=180
d=180/20
d=9
| 21/42=28/x | | (27000-720x)(x)=R(x) | | (27,000-720x)(x)=R(x) | | (x+7)+x=21 | | 35=5-2x+8x | | a-7=5-3a | | 8x+11+3x+8+2x+5=180 | | 11x+2+x=180 | | 7.25xX=45 | | 2^2x=16^x-1 | | 2210=3x | | 2w+4=w | | 30(8.75x+11)=400 | | 11x-3=2x+60 | | 9+x×x=85 | | G31=4-9y | | n+(-14)=(-31) | | 9=6x+33 | | 44(60+x)=110x | | 981/12-15+x=282 | | 984/12-15*x=282 | | x+27=-8x | | 1.25x-4=-2.75x+8.75 | | 14/15=15x | | F(x)=12x+7;(12) | | 14÷15=15x | | 6y=3+5(y-2) | | r2+4r+1=0 | | 6(x-6)=5(x+6) | | 2M-3=5k | | 9y=6+33 | | (15÷x+3)7-9x=0 |