2x+5(x+2)-21=4-(2x-10)+2

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Solution for 2x+5(x+2)-21=4-(2x-10)+2 equation:


Simplifying
2x + 5(x + 2) + -21 = 4 + -1(2x + -10) + 2

Reorder the terms:
2x + 5(2 + x) + -21 = 4 + -1(2x + -10) + 2
2x + (2 * 5 + x * 5) + -21 = 4 + -1(2x + -10) + 2
2x + (10 + 5x) + -21 = 4 + -1(2x + -10) + 2

Reorder the terms:
10 + -21 + 2x + 5x = 4 + -1(2x + -10) + 2

Combine like terms: 10 + -21 = -11
-11 + 2x + 5x = 4 + -1(2x + -10) + 2

Combine like terms: 2x + 5x = 7x
-11 + 7x = 4 + -1(2x + -10) + 2

Reorder the terms:
-11 + 7x = 4 + -1(-10 + 2x) + 2
-11 + 7x = 4 + (-10 * -1 + 2x * -1) + 2
-11 + 7x = 4 + (10 + -2x) + 2

Reorder the terms:
-11 + 7x = 4 + 10 + 2 + -2x

Combine like terms: 4 + 10 = 14
-11 + 7x = 14 + 2 + -2x

Combine like terms: 14 + 2 = 16
-11 + 7x = 16 + -2x

Solving
-11 + 7x = 16 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-11 + 7x + 2x = 16 + -2x + 2x

Combine like terms: 7x + 2x = 9x
-11 + 9x = 16 + -2x + 2x

Combine like terms: -2x + 2x = 0
-11 + 9x = 16 + 0
-11 + 9x = 16

Add '11' to each side of the equation.
-11 + 11 + 9x = 16 + 11

Combine like terms: -11 + 11 = 0
0 + 9x = 16 + 11
9x = 16 + 11

Combine like terms: 16 + 11 = 27
9x = 27

Divide each side by '9'.
x = 3

Simplifying
x = 3

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