If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7x-4+31=90
We move all terms to the left:
7x-4+31-(90)=0
We add all the numbers together, and all the variables
7x-63=0
We move all terms containing x to the left, all other terms to the right
7x=63
x=63/7
x=9
| -3(6h+10)=4-h | | 9(2d-10)-7=7(4d-1) | | 2-5(6h+3)=9+10+2h | | 7x-17+25+17+23=90 | | w÷6.4=8.4 | | 5k=135k= | | 7x-17+25+17+23=180 | | 46=12+n | | 19.91=3.09(u+2)+1.37 | | a/12=(-3) | | -19-x=-6(3x+60 | | 19.91=3.09(u+2)+1.36 | | 7x-17+25+18+23=90 | | 6x-7=2x+13= | | 7x-17+25+18+23=180 | | 2.x+4=19–2x | | 3x+63+6+12=180 | | 7m=(-28) | | 8x-55=25 | | 12x=18(16) | | 5(4p-1)-10p=9p | | 12x=18.16 | | 12x=18x16 | | j-2.7=10.3 | | 38+x-3=90 | | 9n+5=3 | | 2x-2+29=90 | | (7x3)-19=2 | | /4x+2=2x+6 | | 2(h+3)-2=6 | | x–(-4)=10 | | 8x-15=3x+18 |