If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(3x)x30=90
We move all terms to the left:
(3x)x30-(90)=0
We move all terms containing x to the left, all other terms to the right
3xx30=90
x=90/1
x=90
| 1/2v+11/12-5/4=-5/12 | | 4x2-6=10 | | 8-2(n+3)=n+7-n | | -9-6x=-6-5x | | 10q+3q+5=2(q-3)q= | | z/10=300 | | 50=5t+0.9375t^2 | | x-7=147 | | n/2=10/20 | | 6x-4=@ | | x2+21x+111=0 | | 1/3=3/n | | .3x-0.6x=1.25 | | 9x+48=x-32 | | 5+x2+14x-3=x(x-6)+82 | | 5+2.50m=15 | | n/4=8/12 | | 3(2x2-4)=12 | | 4x2+5=69 | | n/2=4/8 | | x+x+x+6x+120=360 | | 3x2-4=23 | | 8t–9=3t+16* | | 2(1.5m+1)=2.5(2m+4) | | 8t–9=3t+16 | | X2+y2=35 | | n-7.5=22 | | -(-x+4)+4x-3=31 | | 2(1.5m)=2.5 | | x2+6=5 | | x2-4=9 | | -6t-12=54 |