If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
-21x2 + 7 = 0
Reorder the terms:
7 + -21x2 = 0
Solving
7 + -21x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + -21x2 = 0 + -7
Combine like terms: 7 + -7 = 0
0 + -21x2 = 0 + -7
-21x2 = 0 + -7
Combine like terms: 0 + -7 = -7
-21x2 = -7
Divide each side by '-21'.
x2 = 0.3333333333
Simplifying
x2 = 0.3333333333
Take the square root of each side:
x = {-0.577350269, 0.577350269}
| -6k+3=5k+36 | | 2.9w+5=47w-7.6 | | 2=4(3k-8)-1k | | 2m^2=-m+28 | | 2.9w+5=407w-7.6 | | -7-6a+5a=3a+5a | | 7(p+8q-14)= | | 4x-1/9=3x+5/3 | | n+2x=2x+6 | | 3x+5x-17=-1 | | 3(6-2x)+4(x-5)=8 | | -4(7-y)= | | 23-16=-6x-2x-2x+9x | | 2d*d= | | 3(a-4)=6a-(3a-12) | | .66x-34=32 | | 2s^2-3=5s | | y^2+12y+2x+36=0 | | -5x+6x-16=3x+2x-4 | | -10-2c=-6c-54 | | 34=5x+9 | | d*2d= | | 16+(-22)= | | X-(2-x)=2 | | 3x=-y+4 | | 3(9-6x)-10x=-1 | | 5y^2=-8y-3 | | 250=10(x-65)+50 | | (4x+14)=6 | | 7x-4=4x+7x+8 | | 91*7= | | 6+(-18)=2x |