5(4x+1)+7=21x+3

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Solution for 5(4x+1)+7=21x+3 equation:


Simplifying
5(4x + 1) + 7 = 21x + 3

Reorder the terms:
5(1 + 4x) + 7 = 21x + 3
(1 * 5 + 4x * 5) + 7 = 21x + 3
(5 + 20x) + 7 = 21x + 3

Reorder the terms:
5 + 7 + 20x = 21x + 3

Combine like terms: 5 + 7 = 12
12 + 20x = 21x + 3

Reorder the terms:
12 + 20x = 3 + 21x

Solving
12 + 20x = 3 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
12 + 20x + -21x = 3 + 21x + -21x

Combine like terms: 20x + -21x = -1x
12 + -1x = 3 + 21x + -21x

Combine like terms: 21x + -21x = 0
12 + -1x = 3 + 0
12 + -1x = 3

Add '-12' to each side of the equation.
12 + -12 + -1x = 3 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 3 + -12
-1x = 3 + -12

Combine like terms: 3 + -12 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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