If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X-(-2X)=9
We move all terms to the left:
X-(-2X)-(9)=0
We get rid of parentheses
X+2X-9=0
We add all the numbers together, and all the variables
3X-9=0
We move all terms containing X to the left, all other terms to the right
3X=9
X=9/3
X=3
| 2y+18/25=5y-39/35 | | 4x+6.03=2.7x | | y=-12X^2-2X+4 | | 68=(x+48) | | a(a-12)(2a+9)=0 | | 6x+3=13x-14 | | -4x=1-5x | | X+40x+100x=180 | | X^3-12x^2+6x+0=0 | | -2x=4-9x | | 5p+7=4p+2 | | 90=(133-y) | | 123=2v+1 | | 12-5y=42 | | 0.5=3x/x | | -v+289=55 | | 2x(-)3=-2 | | 1/2x-4+1=-3=-1/2x | | 0.67x=4 | | 5x+(2x-3)=7x-3 | | (4x+3)(4x+7)=180 | | (4x+3)(4x+7)=90 | | 7x6^4x=63 | | 4w=133 | | 8+7n=5-7n | | 9x+8=133 | | 8r+11r=5r=12r=42 | | 112x=8+80x | | 4x(-1)x9=-36 | | 0435+x=0.92 | | 3g+18=-10+7g | | 73+46=x |