If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x+15+4x+9=90
We move all terms to the left:
2x+15+4x+9-(90)=0
We add all the numbers together, and all the variables
6x-66=0
We move all terms containing x to the left, all other terms to the right
6x=66
x=66/6
x=11
| z=-15+2z | | -u/2=-46 | | 13x+34=180 | | 10+e=-34 | | -6d=-5d+12 | | 12x=621 | | 2x2+4x+4=130 | | 45s=650 | | 20+13h=18h | | x+69=25 | | 180=(3x-35)+130 | | -4x+(20)=8 | | 15v-16=17v | | -7-28x=26x-39 | | 49/5x-3=63/14+77/22 | | -20u=9-u | | x–(x/3+x/4)=4.6 | | 3(s-16)+-11=1 | | y/4+12=28 | | 1/2(x-1/2)=10 | | 8=3(u+3)-4 | | 2(x+15)+3(2x-4)=4(2-x)+2x+3(x-4) | | 5/7=h/35 | | x+0.2*x=5 | | 2(g-15)+14=18 | | -4(x+5)=8 | | z^=81/121 | | -2(f-9)=-18 | | 18-12g=-13g | | 6x-(6=4x)=26x | | x–x/3+x/4=4.6 | | 4g-g=3 |