7(3x+21)-21=30

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Solution for 7(3x+21)-21=30 equation:


Simplifying
7(3x + 21) + -21 = 30

Reorder the terms:
7(21 + 3x) + -21 = 30
(21 * 7 + 3x * 7) + -21 = 30
(147 + 21x) + -21 = 30

Reorder the terms:
147 + -21 + 21x = 30

Combine like terms: 147 + -21 = 126
126 + 21x = 30

Solving
126 + 21x = 30

Solving for variable 'x'.

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

Add '-126' to each side of the equation.
126 + -126 + 21x = 30 + -126

Combine like terms: 126 + -126 = 0
0 + 21x = 30 + -126
21x = 30 + -126

Combine like terms: 30 + -126 = -96
21x = -96

Divide each side by '21'.
x = -4.571428571

Simplifying
x = -4.571428571

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