If it's not what You are looking for type in the equation solver your own equation and let us solve it.
A in (-oo:+oo)
A/12 = 28 // - 28
A/12-28 = 0
1/12*A-28 = 0 // + 28
1/12*A = 28 // : 1/12
A = 28/1/12
A = 336
A = 336
| 3-m+3m=k | | 9/3=j/4 | | 1-4n-2n=7 | | 7.4x+3-9=6+7.4x | | 2u/u | | -12+x=12 | | t/8−3/4=9/16 | | 4/5×4/5 | | 6(y-1)=9y-24 | | -15/3=e | | O=p-6+8 | | A/22=-21 | | 6a-4=8a+6 | | -4=b^2-4b | | 3y=4x-9y | | n-8-5n=8 | | 4+8x+2x+6=8x+20 | | 40x-900=-15x+2400 | | 8=n/14 | | 18x-3-4=101 | | -25+y=-100 | | 2x+60=y | | g(-5)=5-4/5x | | -0.2+x= | | 3(x-9)+x-5=6(x+2)-2(x+22) | | -12=10 | | 4(2.5x-2)=10x-10+2 | | (11J-1)/5=8 | | cos40=5/x | | 8+7(2x-6)=13x-10 | | 80=(5x+y)+(2x+y) | | 3r^2-2r-4=0 |