21=5(x+3)

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


Simplifying
21 = 5(x + 3)

Reorder the terms:
21 = 5(3 + x)
21 = (3 * 5 + x * 5)
21 = (15 + 5x)

Solving
21 = 15 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + -5x = 15 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + -5x = 15 + 0
21 + -5x = 15

Add '-21' to each side of the equation.
21 + -21 + -5x = 15 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = 15 + -21
-5x = 15 + -21

Combine like terms: 15 + -21 = -6
-5x = -6

Divide each side by '-5'.
x = 1.2

Simplifying
x = 1.2

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