9x^2=9x^2-21x-21x+49

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Solution for 9x^2=9x^2-21x-21x+49 equation:


Simplifying
9x2 = 9x2 + -21x + -21x + 49

Reorder the terms:
9x2 = 49 + -21x + -21x + 9x2

Combine like terms: -21x + -21x = -42x
9x2 = 49 + -42x + 9x2

Add '-9x2' to each side of the equation.
9x2 + -9x2 = 49 + -42x + 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
0 = 49 + -42x + 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
0 = 49 + -42x + 0
0 = 49 + -42x

Solving
0 = 49 + -42x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '42x' to each side of the equation.
0 + 42x = 49 + -42x + 42x
Remove the zero:
42x = 49 + -42x + 42x

Combine like terms: -42x + 42x = 0
42x = 49 + 0
42x = 49

Divide each side by '42'.
x = 1.166666667

Simplifying
x = 1.166666667

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