If it's not what You are looking for type in the equation solver your own equation and let us solve it.
100=12x+13
We move all terms to the left:
100-(12x+13)=0
We get rid of parentheses
-12x-13+100=0
We add all the numbers together, and all the variables
-12x+87=0
We move all terms containing x to the left, all other terms to the right
-12x=-87
x=-87/-12
x=7+1/4
| F(-5)=x^2-2x+7 | | (9x+16)(19x+3)(6x+15)=180 | | 3r=-42 | | 12.50+5/9=x | | 12=15n=33 | | 1x+1.2x-5.4=−10 | | 2({1}{2}x-6)=11 | | -28=x+4 | | 3(x-5)^2=363 | | 2/3x-8=x-17 | | 27=12x+6x+1+2 | | (2x+3)=(9x-25) | | 12(f+5)=138 | | 3(x–5)=2x–3 | | 4g-36=-12 | | 27=12x+1+2 | | -18=-9c | | 3+5x=(4x+7)=4(7x+3)-3 | | 9x44+6x+3=77 | | 1.2*8.5=1.7x | | -3x+4=5x+7 | | 2*x1x=49 | | -4.5+4.5=+y3 | | n=17.53-n | | 11+1x+22=67x+33 | | x/10=3.5/4 | | 4(x+2)=-(x-33) | | 10.5n=63 | | 29.24+5.8=1.2+5.1(p+6.5) | | 11+1x+22=67x= | | x+2/x+15=11/x | | 5x+4=25x-6 |