x+21=5(3)

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


Simplifying
x + 21 = 5(3)

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

Multiply 5 * 3
21 + x = 15

Solving
21 + x = 15

Solving for variable 'x'.

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

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

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

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

Simplifying
x = -6

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