4(x+5)2-3=21

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Solution for 4(x+5)2-3=21 equation: 


Simplifying
4(x + 5) * 2 + -3 = 21

Reorder the terms:
4(5 + x) * 2 + -3 = 21

Reorder the terms for easier multiplication:
4 * 2(5 + x) + -3 = 21

Multiply 4 * 2
8(5 + x) + -3 = 21
(5 * 8 + x * 8) + -3 = 21
(40 + 8x) + -3 = 21

Reorder the terms:
40 + -3 + 8x = 21

Combine like terms: 40 + -3 = 37
37 + 8x = 21

Solving
37 + 8x = 21

Solving for variable 'x'.

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

Add '-37' to each side of the equation.
37 + -37 + 8x = 21 + -37

Combine like terms: 37 + -37 = 0
0 + 8x = 21 + -37
8x = 21 + -37

Combine like terms: 21 + -37 = -16
8x = -16

Divide each side by '8'.
x = -2

Simplifying
x = -2

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