4(x-2)+7=21

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


Simplifying
4(x + -2) + 7 = 21

Reorder the terms:
4(-2 + x) + 7 = 21
(-2 * 4 + x * 4) + 7 = 21
(-8 + 4x) + 7 = 21

Reorder the terms:
-8 + 7 + 4x = 21

Combine like terms: -8 + 7 = -1
-1 + 4x = 21

Solving
-1 + 4x = 21

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 4x = 21 + 1

Combine like terms: -1 + 1 = 0
0 + 4x = 21 + 1
4x = 21 + 1

Combine like terms: 21 + 1 = 22
4x = 22

Divide each side by '4'.
x = 5.5

Simplifying
x = 5.5

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