If it's not what You are looking for type in the equation solver your own equation and let us solve it.
p in (-oo:+oo)
(21/2)*p = 18 // - 18
(21/2)*p-18 = 0
21/2*p-18 = 0 // + 18
21/2*p = 18 // : 21/2
p = 18/21/2
p = 12/7
p = 12/7
| 10x+5(19-x)=290 | | 15-b=11.3 | | 10x+5(x-19)=290 | | 3(x-3)=3x-12 | | -6+2[6(x+1)+8]=38 | | y=5*0.15-7 | | x=5.5+-0.5y | | -13x=2 | | 6-12m=-20m+22 | | 12-(8/5+3/2/3)= | | 7p=91 | | 12k+5=16k | | 3/5-3 | | 10=5-6b+3 | | 12k+8=6 | | n-32=74 | | 5x+39=7+13x | | 15-2b=19 | | 2v+7(6*6-3v)=4-37 | | 25/4.39 | | 4a+2+3a= | | 6x-4+4x=40 | | 0.6n+18+n=21 | | 123=9y+4+7y | | q/10+5=10 | | -3x-3(-5-17)=3 | | 78.50-29.75= | | 4-3y=-31 | | 2(2.5b-9)+66=-7 | | 64+m=464 | | 3x+25=7-5 | | 10b-7a+(-b)+10a-9b+5=0 |