If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7.1+x=12.9
We move all terms to the left:
7.1+x-(12.9)=0
We add all the numbers together, and all the variables
x-5.8=0
We move all terms containing x to the left, all other terms to the right
x=5.8
| -w+10=275 | | -4(-6+4x)=-8(x-7) | | 9+21x=744 | | 28=15+2(7-2x | | 158-v=101 | | 9x+6=14x+11 | | -6−4t=-5t | | -x+157=206 | | 10h+4=8h | | x+(3x+25)+(x-5)=180 | | -9v(4v+2)+5v=3v+50 | | 68/y=17/25 | | 8f=8f-7 | | 3(m-853)=228 | | 3x-5(2x-5)=6(3x-10) | | 9=-7m=1-6 | | r²+1=37 | | 3-1-4y=5/3 | | (1/3)x=15 | | 9(3x-5)=16 | | 1+-6x+2x=-7 | | 5x-3(x-3)=-7+4x+6 | | -126-10x=-306 | | 5=40/u | | 6{4z-7}=30 | | 0=-16x^2+64x+75 | | 3b+11=71 | | 8x+6=4x+28 | | 12x+40=6x-2 | | x/4+-0.5=1 | | -4u+1=-I-17 | | 14+3=2x-3(-4x-5)-13 |