If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15xx-7=-84
We move all terms to the left:
15xx-7-(-84)=0
We add all the numbers together, and all the variables
15xx+77=0
We move all terms containing x to the left, all other terms to the right
15xx=-77
x=-77/1
x=-77
| -10(x-1)=+8 | | 12x-18=8x-2 | | 14-6y=-214 | | y+y+2(5)=20 | | u-0.5=0.2 | | u—0.5=0.2 | | 4b=1024 | | 18a-9=5(3a-7)-1 | | 2t-12=7 | | (x+7)(x+7)-11=0 | | 14t-7=-46 | | x2-18x+64=0 | | 9r2+18r-27=0 | | (x+1)(x+1)-36=0 | | 4y+30+2y=90 | | 2^(x-2)*3^(2x-6)=36 | | 0.6b=12 | | 13x+26=-13 | | 6h+2(h-1)=8h-2 | | 6(x-8)+3=6x-44 | | 7x+3=13x–3 | | (x-1)(x-2)(x-4)(x-8)=10x^2 | | 3(x-8)+10=3x-14 | | 10-2x+40-14x=180 | | 10-2x=40-14x | | (X/3)+(x/4)+(x/5)=47 | | 2x+3=7+8 | | 74-x=180 | | 46/(x+5)=23/x | | 3x-11+2x-4=90 | | 34100=x+.041x | | 3x-11=2x-4 |