If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x+4+2x+7=90
We move all terms to the left:
x+4+2x+7-(90)=0
We add all the numbers together, and all the variables
3x-79=0
We move all terms containing x to the left, all other terms to the right
3x=79
x=79/3
x=26+1/3
| 67.3=3.2w | | 22r^2-63r+20=0 | | (3x-6)(14x+21)=0 | | 4r+9+7=72 | | X=0.08(x+400) | | 2a+3=1/2a+12 | | 2a+3=1/2a | | (0.1-x)/x=0.43 | | 2x/3+7x/12=1,5 | | k.6+8=5 | | x+17=131 | | (0.01-x)/x=0.43 | | 32(x-10)+29x+3(x-5)=945 | | -8/7x+-2/7=3/7 | | .15-x/x=1.58 | | 3(x+12)=4 | | 10x+20=6x+40 | | F(x)=2x3+5x | | 2x–15–x=21+10x | | 25y-4y=0 | | 8=2/5n | | x^2-14+17=0 | | 3x^+2=62 | | 24x^2-20x^2=2 | | 9x-63=54 | | (7x-6)-50=360 | | 90/45=u | | -7x-10x=-19 | | 45=t+17 | | 1/2(3/2y+1/3)=1/2(y-5/2) | | -17.01+14.85x=15.06x+4.15 | | -15(h-5)+8=17 |