If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5a-5+14a+20=90
We move all terms to the left:
5a-5+14a+20-(90)=0
We add all the numbers together, and all the variables
19a-75=0
We move all terms containing a to the left, all other terms to the right
19a=75
a=75/19
a=3+18/19
| 10v-30=20v+9 | | 2x-(5x-2)=8+(2x-2) | | 5x-8=13x-104 | | (3x+36)(x-11)=(2x+34)(x-12) | | -4/5u+5/2=-6/5u-2 | | 8u+25=-12u-20 | | 2.5=-3+7x^-1+2x | | H^2+3h=88 | | 14w-35=-20w+15 | | 10y-7=18+5y | | 4x2+4x+2=0 | | 87-(4x+10)=4(x+8)+x | | 6r+6=48r+12 | | 8x2+4x+2=0 | | (5x-9)/(-3)=-7 | | 11/4+4y=9y-1/4 | | -5v+26=-3(v-8) | | -3(u-8)=-6u-6 | | -8w+46=-5(w-8) | | 8-a=+12 | | 7(W-3)=2w+9 | | -4x+28=-8(x-2) | | (x/5)-x+1/7=13/35 | | 2x-6=1£ | | -25=5/4x | | 1=10/6x | | -34=2(w-8)-8w | | |8x-20|=|6x+11| | | 3w+10=-5(w+6) | | -5u+3(u+3)=27 | | -2y+5(y-3)=6 | | u+2=4u=7 |