If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X+3+3X-19=90
We move all terms to the left:
X+3+3X-19-(90)=0
We add all the numbers together, and all the variables
4X-106=0
We move all terms containing X to the left, all other terms to the right
4X=106
X=106/4
X=26+1/2
| 5a/7=52 | | 8x(2×-1)=-1 | | 12,05-7x+14,82+9,5x=2,5x-10,05+3,2x+7,8 | | (x+5)/4-6x=x/3-6x+5 | | X+3+3x-19=180 | | 744=9f+135 | | 2x+5(-5)=-19 | | -19=11r-(-3) | | 5x+18,5-8,5x-12,35=2,8x+8,75-33,32-1,5x | | 2x+13+4x-1=90 | | 2x+13+4x-1=180 | | -7v+19=-65 | | 9x+x=6*5 | | 7x-(25x2+12x)= | | -7=-11r-(-3) | | 9y^2-12y+16=0 | | 3,5x-17,3+5,2x-8=20,5-4,5x-2,5x+20,14 | | 9^n=81 | | 9+3a=63 | | 2m+12=28 | | 97,7-32/9=x/5 | | 8x+111-5x+73=-70+3x+354+4x | | 9b-8=64 | | 5p-6=54 | | 9y-12=42 | | x^2+159x-4800=0 | | 3-x-4=56 | | 5n+1=4n | | 3w+5=0 | | 3b+5b+b=180 | | m/8-6=5 | | 7x-85+4x-42=8x+45-12x+128 |