5x(x+1)-7=5x^2-3x+9

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Solution for 5x(x+1)-7=5x^2-3x+9 equation:


Simplifying
5x(x + 1) + -7 = 5x2 + -3x + 9

Reorder the terms:
5x(1 + x) + -7 = 5x2 + -3x + 9
(1 * 5x + x * 5x) + -7 = 5x2 + -3x + 9
(5x + 5x2) + -7 = 5x2 + -3x + 9

Reorder the terms:
-7 + 5x + 5x2 = 5x2 + -3x + 9

Reorder the terms:
-7 + 5x + 5x2 = 9 + -3x + 5x2

Add '-5x2' to each side of the equation.
-7 + 5x + 5x2 + -5x2 = 9 + -3x + 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-7 + 5x + 0 = 9 + -3x + 5x2 + -5x2
-7 + 5x = 9 + -3x + 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-7 + 5x = 9 + -3x + 0
-7 + 5x = 9 + -3x

Solving
-7 + 5x = 9 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-7 + 5x + 3x = 9 + -3x + 3x

Combine like terms: 5x + 3x = 8x
-7 + 8x = 9 + -3x + 3x

Combine like terms: -3x + 3x = 0
-7 + 8x = 9 + 0
-7 + 8x = 9

Add '7' to each side of the equation.
-7 + 7 + 8x = 9 + 7

Combine like terms: -7 + 7 = 0
0 + 8x = 9 + 7
8x = 9 + 7

Combine like terms: 9 + 7 = 16
8x = 16

Divide each side by '8'.
x = 2

Simplifying
x = 2

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