If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X+8.7X=261
We move all terms to the left:
X+8.7X-(261)=0
We add all the numbers together, and all the variables
9.7X-261=0
We move all terms containing X to the left, all other terms to the right
9.7X=261
X=261/9.7
X=26+4.8888888888889/5.3888888888889
| -7+13=5x+49 | | 4x+4=4(x+3) | | -3(4t-4)+7t=8t-7 | | 14x+220=180 | | -2(x+5)+5x+2=27 | | 1+2x-3=4x-5+6x | | 6(3q-4)=20q | | -3(5t-2)+9t=2t-5 | | q+(-150)=-25 | | 12x-31=8x+51 | | -16+13=-20x+23 | | 0.5-0.6x=0.4x11.5 | | 3x2+6x-45=0 | | (2x-5)/(7)=3 | | 4-6m=7m | | f(8)=(1-8) | | 4(5-x)/3=2x+2 | | (5x+6)÷7=3 | | 8x2-4+3x2=7x2+x2+14 | | 5p-1+3p=-25 | | 11+.33(9w-12)=-5(5+w) | | 2x+5=2x-5= | | 90–12x=3090-120=30 | | -6x-18+3x+2=14 | | z/9=20 | | -4+6y=6-6y | | 2x+5=2x+5= | | -5(4t-3)+6t=5t-5 | | |8x-5|=|11-8x| | | 8x+27x-9=7(5x+10) | | 5x+7=2x+12 | | 2.50h*13=3 |