(3x+3)(7x-4)=21x^2+10

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Solution for (3x+3)(7x-4)=21x^2+10 equation:


Simplifying
(3x + 3)(7x + -4) = 21x2 + 10

Reorder the terms:
(3 + 3x)(7x + -4) = 21x2 + 10

Reorder the terms:
(3 + 3x)(-4 + 7x) = 21x2 + 10

Multiply (3 + 3x) * (-4 + 7x)
(3(-4 + 7x) + 3x * (-4 + 7x)) = 21x2 + 10
((-4 * 3 + 7x * 3) + 3x * (-4 + 7x)) = 21x2 + 10
((-12 + 21x) + 3x * (-4 + 7x)) = 21x2 + 10
(-12 + 21x + (-4 * 3x + 7x * 3x)) = 21x2 + 10
(-12 + 21x + (-12x + 21x2)) = 21x2 + 10

Combine like terms: 21x + -12x = 9x
(-12 + 9x + 21x2) = 21x2 + 10

Reorder the terms:
-12 + 9x + 21x2 = 10 + 21x2

Add '-21x2' to each side of the equation.
-12 + 9x + 21x2 + -21x2 = 10 + 21x2 + -21x2

Combine like terms: 21x2 + -21x2 = 0
-12 + 9x + 0 = 10 + 21x2 + -21x2
-12 + 9x = 10 + 21x2 + -21x2

Combine like terms: 21x2 + -21x2 = 0
-12 + 9x = 10 + 0
-12 + 9x = 10

Solving
-12 + 9x = 10

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 9x = 10 + 12

Combine like terms: -12 + 12 = 0
0 + 9x = 10 + 12
9x = 10 + 12

Combine like terms: 10 + 12 = 22
9x = 22

Divide each side by '9'.
x = 2.444444444

Simplifying
x = 2.444444444

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